CN112561271B - Energy consumption evaluation calculation method for ground source heat pump coupled gas distributed triple co-generation system - Google Patents
Energy consumption evaluation calculation method for ground source heat pump coupled gas distributed triple co-generation system Download PDFInfo
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Abstract
The invention discloses an energy consumption evaluation and calculation method of a ground source heat pump coupled gas distributed triple supply system, which comprises the steps of firstly counting operation types, quantity and operation time of different energy supply devices, then calculating municipal power input quantity and energy storage energy of an energy storage device, then calculating accumulated output heat, cold quantity and electric quantity of each energy supply device of the ground source heat pump coupled gas distributed triple supply system and the split supply type energy supply system in different load sections, respectively calculating annual accumulated standard coal consumption of the ground source heat pump coupled gas distributed triple supply system and a comparison energy supply system, and finally calculating annual standard coal saving quantity of the ground source heat pump coupled gas distributed triple supply system. The calculation method of the invention not only can output the standard coal consumption of the annual operation of different energy supply equipment, but also can be used for calculating the annual operation standard coal consumption of the divided supply energy supply system, thereby providing basis for the energy saving effect comparison among different schemes and the economy of the accounting scheme.
Description
Technical Field
The invention relates to an energy consumption evaluation calculation method of a ground source heat pump coupling gas distributed triple supply system, and belongs to the technical field of energy saving effect evaluation of a multi-energy complementary distributed energy supply system.
Background
Along with the development of social economy and the improvement of the living standard of people, the energy demand of China is rapidly increased. The energy supply of China mainly uses high pollution coal, and the use of renewable energy and clean energy is expanded as a main way of energy application at the current moment of increasing environmental awareness. Under the background, a multi-energy complementary distributed energy supply system for coupling and supplying various energy sources such as a gas distributed triple supply system, a renewable energy system, an energy storage device and the like appears, and the energy supply system can supply energy singly or jointly among different energy sources, so that the safety of the energy supply system is improved, the cascade utilization of energy sources is realized, the consumption of conventional energy sources is reduced, and the energy-saving and environment-friendly benefits are better.
Because the system of the type has high complexity and high initial investment, if the energy-saving effect of the system cannot be evaluated, the balance between the economical efficiency and the energy-saving and environment-friendly benefits can be achieved, and the popularization and the use of the multi-energy complementary distributed energy supply system can be prevented. In addition, the system has shorter appearance time and larger difference of energy supply equipment among different systems, and a unified energy-saving performance evaluation and calculation method for the multi-energy complementary distributed energy system is not available at home and abroad at present. Considering that the prior ground source heat pump coupled gas distributed triple supply system has more application items, the invention provides an energy-saving effect evaluation calculation method aiming at the system.
Disclosure of Invention
The invention aims to provide an energy consumption evaluation and calculation method of a ground source heat pump coupled gas distributed triple supply system, which can balance between economy and energy-saving and environment-friendly benefits, improves the safety of an energy supply system, realizes energy cascade utilization, reduces the consumption of conventional energy sources and has better energy-saving and environment-friendly benefits.
The technical scheme of the invention is as follows: a ground source heat pump coupled gas distributed triple co-generation system energy consumption evaluation calculation method comprises the following steps:
Step 1: according to annual energy consumption of a building and equipment configuration conditions of an energy supply system, counting operation types, quantity and operation time of energy supply equipment of the ground source heat pump coupling gas distributed triple power supply system and the split power supply system under different working conditions and different load intervals;
step 2: judging the working states of municipal power and an energy storage device under the working conditions according to the system power generation power and the system total power consumption of the ground source heat pump coupled gas distributed triple supply system under different operation modes, and calculating the municipal power input quantity and the energy storage energy of the energy storage device;
step 3: calculating annual input municipal power, annual input natural gas, annual accumulated storage electric quantity of an energy storage device and annual input cold and heat quantity of a ground source heat pump unit in different load interval sections of energy supply equipment of the ground source heat pump coupling gas distributed triple supply system and the split supply energy supply system, and converting the energy into standard coal;
step 4: the annual accumulated standard coal consumption of the ground source heat pump coupled gas distributed triple supply system and the distributed energy supply system is calculated respectively, and the specific calculation method is as follows:
Gced＝Σ(Gepin.i+Ggas.i+Ggshp.i-Gepout.i)
Gcef＝Σ(Ggas.i+Gepin.i)
Wherein: g ced -the ground source heat pump coupling fuel gas triple supply system accumulates standard coal consumption and kgce all year round; g ced -the standard coal consumption, kgce, is accumulated throughout the year by the split supply type energy supply system.
Step 5: the annual standard coal saving amount of the ground source heat pump coupled gas distributed triple supply system is calculated, and the specific calculation formula is as follows:
ΔGce＝Gcef-Gced
Wherein: delta G ce -ground source heat pump coupling fuel gas triple supply system is compared with a separate supply type energy supply system, standard coal quantity is saved in an accumulated mode all year round, and kgce is saved.
In the above method, in the step 2, the municipal power input amount and the energy storage amount of the energy storage device are calculated in the following manner:
If W 1.i＞W2.i Eepin.i＝(W1.i-W2.i)Ti;Eepout.i =0
If W is 1.i＜W2.i Eepin.i＝0;Eepout.i＝|W1.i-W2.i|Ti
If W 1.i＝W2.i Eepin.i＝0;Eepout.i =0
Wherein: w 1.i -the power generated by the system in the i-th type cooling/heating operation mode, kw; w 2.i -Total System Power consumption, kw, in the i-th type of cooling/heating operating mode.
In the method, the calculation formula of the total annual accumulated input municipal power conversion standard coal mass in the step 3 is as follows:
Gepin.ce＝ΣβEepin.i/(1-η)
Wherein: g epin.ce -accumulating the mass of the input municipal power, the quality of the standard coal and kgce all the year round; beta-electric coal conversion coefficient, herein the value is 0.311kgce/kwh; η -comprehensive line loss rate of the power grid, and checking annual statistical data of the place where the project is located; e epin.i -the municipal power, kwh, is input in the i-th type cooling/heating mode of operation.
In the above method, the calculation formula of the total annual cumulative input natural gas fold standard coal mass in the step 3 is as follows:
Wherein: g gas.ce -accumulating the quality of the input natural gas folded standard coal all the year round, kgce; alpha-natural gas standard coal coefficient, find general energy consumption calculation rule GB/T2589; g gas.i -natural gas consumption input by the system in the i-th type cooling/heating operation mode, m 3;Ti -energy supply system operation time in the i-th type cooling/heating operation mode, and h; n-the number of the same type of consumed fuel gas energy supply equipment in the ith type of cooling/heating operation mode; g egas.q -rated gas consumption of q-th class consuming gas energy supply equipment, m 3/h.
In the above method, the calculation formula of the accumulated storage electric quantity of the energy storage device in the step 3 for the whole year is as follows:
Gepout.ce＝ΣβEepout.i
Wherein: g epout.ce, the energy storage device accumulates the storage electric quantity all the year round to calculate the standard coal quality, kgce; e epout.i -energy storage device stores electric quantity and standard coal quality and kgce under the ith type cooling/heating operation mode.
In the method, the calculation formula of the total annual accumulated input cold and heat quantity of the ground source heat pump unit in the step 3 is as follows:
Ggshp.ce＝ΣEgshp.iβ
Egshp.i＝Ngshp.icop iTi
Wherein: g gshp.ce, accumulating the input cold and heat quantity of the ground source heat pump unit, namely folding the quality of standard coal and kgce; e gshp.i -the quality of the standard coal, kgce, of the input cold and heat quantity of the ground source heat pump unit in the i-type cooling/heating operation mode; n gshp.i -the power consumption of the ground source heat pump unit in the i-th type cooling/heating operation mode, kw; cop i -energy efficiency ratio of the ground source heat pump unit in the i-th type cooling/heating operation mode.
Due to the adoption of the technical scheme, the invention has the advantages that: the calculation method of the invention takes account of the influence of municipal power transmission and distribution loss, low-grade shallow geothermal energy input quantity, energy storage capacity of the energy storage device, the energy-saving effect caused by factors such as running conditions of various devices under different working conditions and different load demands, can output the standard coal consumption of annual running of different energy supply devices, can also be used for calculating the standard coal consumption of annual running of a separate supply energy supply system, and provides a basis for energy-saving effect comparison among different schemes and economy of an accounting scheme.
Drawings
FIG. 1 is a schematic flow chart of a computing method of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
Embodiments of the invention: a flow diagram of the energy consumption evaluation calculation method of the ground source heat pump coupled gas distributed triple co-generation system is shown in fig. 1, and the method comprises the following steps:
Step 1: according to annual energy consumption of a building and equipment configuration conditions of an energy supply system, counting operation types, quantity and operation time of energy supply equipment of the ground source heat pump coupling gas distributed triple power supply system and the split power supply system under different working conditions and different load intervals;
Step 2: according to the system power generation power and the system total power consumption of the ground source heat pump coupled gas distributed triple supply system under different operation modes, the working states of municipal power and an energy storage device under the working conditions are judged, and the municipal power input quantity and the energy storage device energy storage quantity are calculated by the following calculation modes:
If W 1.i＞W2.i Eepin.i＝(W1.i-W2.i)Ti;Eepout.i =0
If W is 1.i＜W2.i Eepin.i＝0;Eepout.i＝|W1.i-W2.i|Ti
If W 1.i＝W2.i Eepin.i＝0;Eepout.i =0
Wherein: w 1.i -the power generated by the system in the i-th type cooling/heating operation mode, kw; w 2.i -Total System Power consumption, kw, in the i-th type of cooling/heating operating mode.
Step 3: the method for calculating the accumulated output heat, cold and electric quantity of each energy supply device of the ground source heat pump coupled gas distributed triple supply system and the split supply energy supply system in different load intervals and converting the input/output energy into standard coal comprises the following steps of:
Gepin.ce＝ΣβEepin.i/(1-η)
Wherein: g epin.ce -accumulating the mass of the input municipal power, the quality of the standard coal and kgce all the year round; beta-electric coal conversion coefficient, herein the value is 0.311kgce/kwh; η -comprehensive line loss rate of the power grid, and checking annual statistical data of the place where the project is located; e epin.i -inputting municipal power and kwh in an i-th type cooling/heating operation mode;
Wherein: g gas.ce -accumulating the quality of the input natural gas folded standard coal all the year round, kgce; alpha-natural gas standard coal coefficient, find general energy consumption calculation rule GB/T2589; g gas.i -natural gas consumption input by the system in the i-th type cooling/heating operation mode, m 3;Ti -energy supply system operation time in the i-th type cooling/heating operation mode, and h; n-the number of the same type of consumed fuel gas energy supply equipment in the ith type of cooling/heating operation mode; g egas.q -rated gas consumption of q-th class consumed gas energy supply equipment, m 3/h;
Gepout.ce＝ΣβEepout.i
Wherein: g epout.ce, the energy storage device accumulates the storage electric quantity all the year round to calculate the standard coal quality, kgce; e epout.i -the quality of the standard coal, kgce, of the electric quantity stored by the energy storage device in the i-th type cooling/heating operation mode;
Ggshp.ce＝ΣEgshp.iβ
Egshp.i＝Ngshp.icop iTi
Wherein: g gshp.ce, accumulating the input cold and heat quantity of the ground source heat pump unit, namely folding the quality of standard coal and kgce; e gshp.i -the quality of the standard coal, kgce, of the input cold and heat quantity of the ground source heat pump unit in the i-type cooling/heating operation mode; n gshp.i -the power consumption of the ground source heat pump unit in the i-th type cooling/heating operation mode, kw; cop i -energy efficiency ratio of the ground source heat pump unit in the i-th type cooling/heating operation mode;
step 4: the annual accumulated standard coal consumption of the ground source heat pump coupled gas distributed triple supply system and the distributed energy supply system is calculated respectively, and the specific calculation method is as follows:
Gced＝Σ(Gepin.i+Ggas.i+Ggshp.i-Gepout.i)
Gcef＝Σ(Ggas.i+Gepin.i)
Wherein: g ced -the ground source heat pump coupling fuel gas triple supply system accumulates standard coal consumption and kgce all year round; g ced -the standard coal consumption, kgce, is accumulated throughout the year by the split supply type energy supply system.
Step 5: the annual standard coal saving amount of the ground source heat pump coupled gas distributed triple supply system is calculated, and the specific calculation formula is as follows:
ΔGce＝Gcef-Gced
Wherein: delta G ce -ground source heat pump coupling fuel gas triple supply system is compared with a separate supply type energy supply system, standard coal quantity is saved in an accumulated mode all year round, and kgce is saved.
In summary, the calculation method of the invention takes into account the influence of municipal power transmission and distribution loss, low-grade shallow geothermal energy input quantity, energy storage energy of the energy storage device, different working conditions, running conditions of various devices under different load demands and other factors on the energy-saving effect, can output the standard coal consumption of annual running of different energy supply devices, can also be used for calculating the standard coal consumption of annual running of a separate supply energy supply system, and provides a basis for energy-saving effect comparison among different schemes and economical efficiency of an accounting scheme.
Claims (4)
1. The energy consumption evaluation and calculation method of the ground source heat pump coupled gas distributed triple co-generation system is characterized by comprising the following steps of:
Step 1: according to annual energy consumption of a building and equipment configuration conditions of an energy supply system, counting operation types, quantity and operation time of energy supply equipment of the ground source heat pump coupling gas distributed triple power supply system and the split power supply system under different working conditions and different load intervals;
step 2: judging the working states of municipal power and an energy storage device under the working conditions according to the system power generation power and the system total power consumption of the ground source heat pump coupled gas distributed triple supply system under different operation modes, and calculating the municipal power input quantity and the energy storage energy of the energy storage device;
step 3: calculating annual input municipal power, annual input natural gas, annual accumulated storage electric quantity of an energy storage device and annual input cold and heat quantity of a ground source heat pump unit in different load interval sections of energy supply equipment of the ground source heat pump coupling gas distributed triple supply system and the split supply energy supply system, and converting the energy into standard coal;
step 4: the annual accumulated standard coal consumption of the ground source heat pump coupled gas distributed triple supply system and the distributed energy supply system is calculated respectively, and the specific calculation method is as follows:
Gced＝Σ(Gepin.i+Ggas.i+Ggshp.i-Gepout.i)
Gcef＝Σ(Ggas.i+Gepin.i)
Wherein: g cef -the ground source heat pump coupling fuel gas triple supply system accumulates standard coal consumption and kgce all year round; g ced -accumulating standard coal consumption and kgce of the split supply type energy supply system all the year round;
step 5: the annual standard coal saving amount of the ground source heat pump coupled gas distributed triple supply system is calculated, and the specific calculation formula is as follows:
ΔGce＝Gcef-Gced
Wherein: delta G ce -the ground source heat pump coupled fuel gas triple supply system saves standard coal quantity and kgce compared with a separate supply type energy supply system in a cumulative way all year round;
And 2, calculating municipal power input quantity and energy storage energy of an energy storage device in the following calculation mode:
If W 1.i＞W2.i Eepin.i＝(W1.i-W2.i)Ti;Eepout.i =0
If W is 1.i＜W2.i Eepin.i＝0;Eepout.i＝|W1.i-W2.i|Ti
If W 1.i＝W2.i Eepin.i＝0;Eepout.i =0
Wherein: w 1.i -the power generated by the system in the i-th type cooling/heating operation mode, kw; w 2.i -the total power consumption of the system in the i-th type cooling/heating operation mode, kw;
in the step 3, the calculation formula of the total annual accumulated input municipal power fold standard coal quality is as follows:
Gepin.ce＝ΣβEepin.i/(1-η)
Wherein: g epin.ce -, G
Accumulating the mass of the input municipal power fold standard coal and kgce all the year round; beta is an electric coal conversion coefficient, and the value is 0.311kgce/kwh; η is the comprehensive line loss rate of the power grid and is obtained by checking the annual statistical data of the place where the project is located; e epin.i -the municipal power, kwh, is input in the i-th type cooling/heating mode of operation.
2. The energy consumption evaluation and calculation method of the ground source heat pump coupled gas distributed triple co-generation system according to claim 1, which is characterized in that: the calculation formula of the total annual accumulated input natural gas fold standard coal mass in the step 3 is as follows:
Wherein: g gas.ce -accumulating the quality of the input natural gas folded standard coal all the year round, kgce; alpha-natural gas standard coal coefficient is obtained by checking general energy consumption calculation rule GB/T2589; g gas.i -natural gas consumption input by the system in the i-th type cooling/heating operation mode, m 3;Ti -energy supply system operation time in the i-th type cooling/heating operation mode, and h; n-the number of the same type of consumed fuel gas energy supply equipment in the ith type of cooling/heating operation mode; g egas.q -rated gas consumption of q-th class consuming gas energy supply equipment, m 3/h.
3. The energy consumption evaluation and calculation method of the ground source heat pump coupled gas distributed triple co-generation system according to claim 1, which is characterized in that: the calculation formula of the accumulated storage electric quantity of the energy storage device in the step 3 for folding the standard coal quality all year round is as follows:
Gepout.ce＝ΣβEepout.i
Wherein: g epout.ce, the energy storage device accumulates the storage electric quantity all the year round to calculate the standard coal quality, kgce; e epout.i -energy storage device stores electric quantity and standard coal quality and kgce under the ith type cooling/heating operation mode.
4. The energy consumption evaluation and calculation method of the ground source heat pump coupled gas distributed triple co-generation system according to claim 1, which is characterized in that: in the step 3, the calculation formula of the total annual accumulated input cold and heat quantity of the ground source heat pump unit is as follows:
Ggshp.ce＝ΣEgshp.iβ
Egshp.i＝Ngshp.icopiTi
Wherein: g gshp.ce, accumulating the input cold and heat quantity of the ground source heat pump unit, namely folding the quality of standard coal and kgce; e gshp.i -the quality of the standard coal, kgce, of the input cold and heat quantity of the ground source heat pump unit in the i-type cooling/heating operation mode; n gshp.i -the power consumption of the ground source heat pump unit in the i-th type cooling/heating operation mode, kw; cop i -energy efficiency ratio of the ground source heat pump unit in the i-th type cooling/heating operation mode.
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| CN111626584A (en) * | 2020-05-21 | 2020-09-04 | 国网经济技术研究院有限公司 | Evaluation method and system suitable for regional energy Internet planning design |
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