CN109405056A - A method of with heat source system heat supply and accumulation of heat decoupling operation - Google Patents
A method of with heat source system heat supply and accumulation of heat decoupling operation Download PDFInfo
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- CN109405056A CN109405056A CN201811208294.1A CN201811208294A CN109405056A CN 109405056 A CN109405056 A CN 109405056A CN 201811208294 A CN201811208294 A CN 201811208294A CN 109405056 A CN109405056 A CN 109405056A
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- 238000009825 accumulation Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 146
- 238000010438 heat treatment Methods 0.000 claims abstract description 86
- 239000008400 supply water Substances 0.000 claims abstract description 42
- 238000010276 construction Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1048—Counting of energy consumption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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- Thermal Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a kind of methods of same heat source system heat supply and accumulation of heat decoupling operation, the following steps are included: budgetary estimate for hot side design heating load, calculate for hot side quantity of circulating water, system starting, calculate for hot side thermic load, calculate for hot side supply water temperature, user side supply water temperature adjustment the present invention can be efficiently separated in same heat source system for the influence between hot side and accumulation of heat side, on the one hand heating according to need, stable operation are realized to for hot side, another aspect accumulation of heat side can simplify the process supplied when storing, high efficiency with high-temperature stable accumulation of heat.Temperature adjustment process of the invention is heat source water outlet and does not lose the thermal energy of system entirety during entire temperature adjustment for the mixed flow process of hot side return water adjustment ratio, effectively raises the heating efficiency of heat source.The present invention be make for hot side integrally using matter adjusting by the way of, realize heating load and calorific requirement balance.Management is simple, easy to operate, and network hydraulic regime is stablized.
Description
Technical field
The invention belongs to supply regulating method fields, and in particular to a kind of same heat source system heat supply and accumulation of heat decoupling operation
Method.
Background technique
With in the heat supply and heat-accumulating process of heat source system, it should heating according to need and high-efficiency thermal storage can be met simultaneously.To realize
Heating according to need needs the flow to heating system, supply water temperature etc. to be adjusted when the variation of user's thermic load.For thermal conditioning
Purpose be to make to heat the heat dissipation capacity of heat dissipation equipment of user and the changing rule of user's thermic load is adapted, to prevent from heating
There is the too high or too low situation of room temperature in user.
In water hold over system, heat storage medium --- water first, and be stored in hot water storage tank.In order to benefit
With the abundant accumulation of energy of thermal storage time, it should ensure that water tank water intake maintains the condition of high temperature first.But in the heat supply hold over system of same heat source
In, also needed while to user's heat supply to water tank carry out accumulation of heat, if system integrally using matter adjusting by the way of, i.e., with heat supply
Based on, to reach the equilibrium of supply and demand, for hot side, required supply water temperature is different under the influence of different outdoor temperatures, due to being same heat source
Water outlet, so will have a direct impact on the inflow temperature of water tank, to reduce the heat storage efficiency of water tank, or even is difficult to reach highest accumulation of heat
Temperature；Such as the adjusting method that extraction system is integrally adjusted using amount, accumulation of heat side can guarantee high-temperature heat accumulation, but for hot side can because
The variation of thermic load causes the variation of circulating water flow in system, may will affect the room temperature of user, or even generate waterpower
The consequence of imbalance.
To solve the problems, such as that the mode of single adjusting is brought, currently, the country is frequently with adjustment pump rotary speed or adjustment boiler
Power solves to obtain the method for operation of flow, temperature while variation, but to be related to variable excessive for this method of operation, can not essence
Variable needed for really controlling, has seriously affected the stability of system, has led to the increase of operation energy consumption, or even affected heating system
Regulation performance.
Summary of the invention
The present invention proposes in order to solve the problems existing in the prior art, the purpose is to provide a kind of same heat source system heat supply and
The method of accumulation of heat decoupling operation.
The technical scheme is that a kind of method of same heat source system heat supply and accumulation of heat decoupling operation, including following step
It is rapid:
I budgetary estimate is for hot side design heating load
Using volume heating index method or the budgetary estimate of square therm alindex method for hot side design heating load.
II is calculated for hot side quantity of circulating water
According to, for hot side design heating load, being calculated for hot side quantity of circulating water in step I.
The starting of III system
Starting carries out heat supply and accumulation of heat with heat source system, and guarantees the constant high temperature accumulation of heat of accumulation of heat side；
IV is calculated for hot side thermic load
The setting control period calculates thermic load needed for heating according to outdoor temperature variation in control cycle time section.
V is calculated for hot side supply water temperature
Within the control period, user side flow is constant, is changed according to outdoor weather, by changing user side supply water temperature,
Maintain return water temperature constant to realize heating load and calorific requirement balance.
The adjustment of VI user side supply water temperature
User side circular flow is certain, by changing the supply water temperature of user side, realizes that heating load and calorific requirement balance, root
Mixed flow flow is calculated according to for hot side supply water temperature, thus adjusting control valve door.
It is as follows for the formula of hot side design heating load with the budgetary estimate of volume heating index method in step I:
Q’n=qvVw(tn-t’w)×10-3kW
Wherein, Q 'n--- the design space-heating load of building, kW；
Vw--- architecture enclosing volume, m3；
Tn--- design indoor temperature for heating, DEG C；
t’w--- heat outdoor calculating temperature, DEG C；
qv--- the space-heating load data per unit building volume of building, W/ (m3DEG C), qvIndicate all kinds of buildings, indoors the outer temperature difference 1
DEG C when, every 1m3The space heating load of architecture enclosing volume.
It is as follows for the formula of hot side design heating load with the budgetary estimate of square therm alindex method in step I:
Q’n=qf·F×10-3kW
Wherein, Q 'n--- the design space-heating load of building, kW；
The construction area , ㎡ of F --- building；
qf--- the space-heating load data per unit floor area of building, W/m2, qfIndicate the space heating load of every 1 ㎡ construction area.
In step II for hot side quantity of circulating water can following formula be determined:
Wherein, Q 'n--- heating side design heating load；
τ’1--- the design supply water temperature at network, DEG C,
τ’2--- the design temperature of return water at network, DEG C,
The quality specific heat of c --- water, c=4.1868kJ/ (kg DEG C)=1kcal/ (kg DEG C),
The design supply water temperature is the maximum water temperature of heat source, i.e. T 'g；The design temperature of return water is T 'h；
Then for hot side quantity of circulating water
The system of step III start specifically includes the following steps:
Before system formally puts into operation, backwater diffluence tube control flap, water supply isocon are controled valve closing, the control of accumulation of heat side
Valve opening processed is opened for hot side control valve；
Start heat source, heat source leaving water temperature TgIt remains unchanged, occurrence T 'g, adjust heat-source Cycles water, heat source water outlet
Flow G11It remains unchanged, occurrence G '11, heat source water flow is equal to user side circular flow GmWith accumulation of heat side circular flow Gx
The sum of, i.e. G11=Gm+Gx；Power is voluntarily adjusted according to return water temperature heat source；
Start accumulation of heat side water pump, keep power constant, guarantees accumulation of heat side circular flow GxFlow is certain, guarantees accumulation of heat side
Constant high temperature accumulation of heat.
The calculation formula of thermic load needed for heating in step IV is as follows:
The setting control period is T, and in T time section, changing thermic load needed for calculating heats according to outdoor temperature is Q,
In formula:
Q’n--- for hot side design heating load；
ti--- heating indoor design temperature, DEG C, generally take ti=18 DEG C；
tw--- in cycle T, predict the average outdoor temperature in the T period, DEG C；
t0--- outdoor design temperature for heating, DEG C.
Step V is calculated for hot side supply water temperature, specifically includes the following steps:
In control cycle T, user side flow GmIt is constant, changed according to outdoor weather, by changing user side for water temperature
Spend Tm, maintain return water temperature ThIt is constant come realize heating load and calorific requirement balance；
Q in formula --- in control cycle T, for hot side thermic load；
The quality specific heat of c --- water, c=4.1868kJ/ (kg DEG C)=1kcal/ (kg DEG C)；
G’m--- for hot side design cycle water, m3/h；
T’h--- for hot side return water design temperature, DEG C.
The adjustment of step VI user side supply water temperature, comprising the following steps:
User side circular flow is certain, by changing the supply water temperature of user side, realizes that heating load and calorific requirement balance.
Guarantee user side heat source water flow G11With user side flow GmIt is constant and equal, i.e. G11=Gm；
Adjustment reaches user side supply water temperature Tm, specific as follows: backwater diffluence a part and heat source water outlet after mixed flow are mixed
It closes, backwater diffluence temperature is Tx, flow G12；Heat source leaving water temperature is T 'g, flow G11；Water supply mixed flow temperature is Tm, flow
For G1, water supply mixed flow node meets flow equilibrium and heat balance, flow equilibrium, that is, G1=G11+G12；
To make mixed flow temperature reach Tm, high temperature fluid thermal discharge is identical as cryogen caloric receptivity, i.e. cG12(Tm-Tx)=
cG11(T’g-Tm)
Adjustment reaches user side water supply flow Gm, specific as follows: temperature Tm, flow G1Mixed flow water, distribute one
Point with return water mixed flow, flow back to heat source, water supply shunt temperature is Tm, water supply bypass flow G13With backwater diffluence flow G12It is equal；It returns
Coolant-temperature gage is Th, flow Gm；Mixed flow flow is G1, temperature TX, return water mixed flow node meets flow equilibrium and heat balance,
Flow equilibrium, that is, G1=G13+Gm；
High temperature fluid thermal discharge is identical as cryogen caloric receptivity, i.e. cG13(Tm-Tx)=cGm(Tx-T’h)
Make G12=G13,Gm=G11, guarantee, i.e. G constant for hot side circular flowm=G 'm
Make Tx-T’h=T 'g-Tm=△ T calculates mixed flow return water temperature Tx=Tg’-Tm+T’h
In summary formula, can be according to for hot side supply water temperature TmCalculate mixed flow flow
Open backwater diffluence tube control flap, supplying water shunts tube control flap, adjustment return water tube control flap, control of supplying water
Valve processed controls flow to institute evaluation G to corresponding same aperture12, to guarantee that user side flow and user side heat source go out
Water flow remains unchanged, and adjusts for hot side variable frequency pump flow, mixed flow flow is made to meet user side circular flow and bypass flow
Requirement, i.e. G1=Gm+G13。
Beneficial effect of the invention is:
1, the present invention can be efficiently separated in same heat source system for the influence between hot side and accumulation of heat side, on the one hand right
Heating according to need, stable operation are realized for hot side, another aspect accumulation of heat side can make the process supplied when storing with high-temperature stable accumulation of heat
Simplify, is efficient.
2, this method temperature adjustment process is heat source water outlet and the mixed flow process for hot side return water adjustment ratio, in entire temperature adjustment
Cheng Zhong does not lose the thermal energy of system entirety, effectively raises the heating efficiency of heat source.
3, the present invention be make for hot side integrally using matter adjusting by the way of, realize heating load and calorific requirement balance.Management
Simply, easy to operate, network hydraulic regime is stablized.
4, operation of the present invention is simple, rationally efficiently.Whole process can realize Automatic Control, regulation and control scheme can be made to optimize,
Reduce the manpower consumption in heat supplying process.
5, the present invention can be such that heat-accumulating process is not influenced by matter adjusting in heat supplying process, to improve heat storage efficiency, fill
The superiority supplied when storing is waved in distribution.If heat source is electric boiler to utilize paddy electricity time high-temperature heat accumulation, peak is both alleviated
Power supply and demand notch, and promote distributing rationally for electric power resource.
6, the present invention can be such that systematic running cost is greatly reduced, and have significant economic advantages, be more advantageous to a wide range of
It promotes the use of.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention；
Fig. 2 is structural schematic diagram of the invention；
Wherein:
1 heat source, 2 hot water storage tank
3 heat user, 4 water supply mixed flow node
5 return water mixed flow node, 6 backwater diffluence tube control flap
7, which supply water, shunts 8 accumulation of heat side control valve of tube control flap
9 for 10 accumulation of heat side water pump of hot side control valve
11 for hot side variable frequency pump.
Specific embodiment
Hereinafter, referring to drawings and examples, the present invention is described in detail:
As shown in Fig. 1~2, the same heat source system that the present invention is based on includes heat source 1, and the water outlet of the heat source 1 passes through
Water supplying pipe is connected to heat user 3, is connected to by accumulation of heat water supplying pipe with hot water storage tank 2, the backwater end of the heat source 1 passes through return pipe
It is connected to heat user 3, is connected to by accumulation of heat return pipe with hot water storage tank 2,
Water supply isocon and backwater diffluence pipe, the backwater diffluence pipe and confession are provided between the water supplying pipe, return pipe
The connectivity part of water pipe is water supply mixed flow node 4, and the connectivity part of the water supply isocon and return pipe is return water mixed flow node 5, institute
It states and is provided with backwater diffluence tube control flap 6 in backwater diffluence pipe, the control of water supply isocon is provided in the water supply isocon
Valve 7.
It is provided with accumulation of heat side control valve 8 in the accumulation of heat water supplying pipe, is provided in the water supplying pipe for hot side control valve
Door 9 is provided with accumulation of heat side water pump 10 in the accumulation of heat return pipe, is provided in the return pipe for hot side variable frequency pump.
A method of with heat source system heat supply and accumulation of heat decoupling operation, comprising the following steps:
I budgetary estimate is for hot side design heating load
Using volume heating index method or the budgetary estimate of square therm alindex method for hot side design heating load.
II is calculated for hot side quantity of circulating water
According to, for hot side design heating load, being calculated for hot side quantity of circulating water in step I.
The starting of III system
Starting carries out heat supply and accumulation of heat with heat source system, and guarantees the constant high temperature accumulation of heat of accumulation of heat side；
IV is calculated for hot side thermic load
The setting control period calculates thermic load needed for heating according to outdoor temperature variation in control cycle time section.
V is calculated for hot side supply water temperature
Within the control period, user side flow is constant, is changed according to outdoor weather, by changing user side supply water temperature,
Maintain return water temperature constant to realize heating load and calorific requirement balance.
The adjustment of VI user side supply water temperature
User side circular flow is certain, by changing the supply water temperature of user side, realizes that heating load and calorific requirement balance, root
Mixed flow flow is calculated according to for hot side supply water temperature, thus adjusting control valve door.
It is as follows for the formula of hot side design heating load with the budgetary estimate of volume heating index method in step I:
Q’n=qvVw(tn-t’w)×10-3kW
Wherein, Q 'n--- the design space-heating load of building, kW；
Vw--- architecture enclosing volume, m3；
Tn--- design indoor temperature for heating, DEG C；
t’w--- heat outdoor calculating temperature, DEG C；
qv--- the space-heating load data per unit building volume of building, W/ (m3DEG C), qvIndicate all kinds of buildings, indoors the outer temperature difference 1
DEG C when, the space heating load of every 1m3 architecture enclosing volume.
It is as follows for the formula of hot side design heating load with the budgetary estimate of square therm alindex method in step I:
Q’n=qf·F×10-3kW
Wherein, Q 'n--- the design space-heating load of building, kW；
The construction area , ㎡ of F --- building；
qf--- the space-heating load data per unit floor area of building, W/m2, qfIndicate the space heating load of every 1 ㎡ construction area.
In step II for hot side quantity of circulating water can following formula be determined:
Wherein, Q 'n--- heating side design heating load；
τ’1--- the design supply water temperature at network, DEG C,
τ’2--- the design temperature of return water at network, DEG C,
The quality specific heat of c --- water, c=4.1868kJ/ (kg DEG C)=1kcal/ (kg DEG C),
The design supply water temperature is the maximum water temperature of heat source, i.e. T 'g；The design temperature of return water is T 'h；
Then for hot side quantity of circulating water
The system of step III start specifically includes the following steps:
Before system formally puts into operation, backwater diffluence tube control flap 6, supplying water shunts the closing of tube control flap 7, accumulation of heat side
Control valve 8 is opened, and is opened for hot side control valve 9；
Start heat source 1,1 leaving water temperature T of heat sourcegIt remains unchanged, occurrence T 'g, heat-source Cycles water is adjusted, heat source 1 goes out
Water flow G11It remains unchanged, occurrence G '11, 1 water flow of heat source is equal to user side circular flow GmWith accumulation of heat side recycle stream
Measure GxThe sum of, i.e. G11=Gm+Gx；Power is voluntarily adjusted according to return water temperature heat source；
Start accumulation of heat side water pump 10, keep power constant, guarantees accumulation of heat side circular flow GxFlow is certain, guarantees accumulation of heat side
Constant high temperature accumulation of heat.
The calculation formula of thermic load needed for heating in step IV is as follows:
The setting control period is T, and in T time section, changing thermic load needed for calculating heats according to outdoor temperature is Q,
In formula:
Q’n--- for hot side design heating load；
ti--- heating indoor design temperature, DEG C, generally take ti=18 DEG C；
tw--- in cycle T, predict the average outdoor temperature in the T period, DEG C；
t0--- outdoor design temperature for heating, DEG C.
Step V is calculated for hot side supply water temperature, specifically includes the following steps:
In control cycle T, user side flow GmIt is constant, changed according to outdoor weather, by changing user side for water temperature
Spend Tm, maintain return water temperature ThIt is constant come realize heating load and calorific requirement balance；
Q in formula --- in control cycle T, for hot side thermic load；
The quality specific heat of c --- water, c=4.1868kJ/ (kg DEG C)=1kcal/ (kg DEG C)；
G’m--- for hot side design cycle water, m3/h；
T’h--- for hot side return water design temperature, DEG C.
The adjustment of step VI user side supply water temperature, comprising the following steps:
User side circular flow is certain, by changing the supply water temperature of user side, realizes that heating load and calorific requirement balance.
Guarantee user side heat source water flow G11With user side flow GmIt is constant and equal, i.e. G11=Gm；
Adjustment reaches user side supply water temperature Tm, specific as follows: backwater diffluence a part and heat source water outlet after mixed flow are mixed
It closes, backwater diffluence temperature is Tx, flow G12；Heat source leaving water temperature is T 'g, flow G11；Water supply mixed flow temperature is Tm, flow
For G1, water supply mixed flow node meets flow equilibrium and heat balance, flow equilibrium, that is, G1=G11+G12；
To make mixed flow temperature reach Tm, high temperature fluid thermal discharge is identical as cryogen caloric receptivity, i.e. cG12(Tm-Tx)=
cG11(T’g-Tm)
Adjustment reaches user side water supply flow Gm, specific as follows: temperature Tm, flow G1Mixed flow water, distribute one
Point with return water mixed flow, flow back to heat source, water supply shunt temperature is Tm, water supply bypass flow G13With backwater diffluence flow G12It is equal；It returns
Coolant-temperature gage is Th, flow Gm；Mixed flow flow is G1, temperature TX, return water mixed flow node meets flow equilibrium and heat balance,
Flow equilibrium, that is, G1=G13+Gm；
High temperature fluid thermal discharge is identical as cryogen caloric receptivity, i.e. cG13(Tm-Tx)=cGm(Tx-T’h)
Make G12=G13,Gm=G11, guarantee, i.e. G constant for hot side circular flowm=G 'm
Make Tx-T’h=T 'g-Tm=△ T calculates mixed flow return water temperature Tx=Tg’-Tm+T’h
In summary formula, can be according to for hot side supply water temperature TmCalculate mixed flow flow
Unlatching backwater diffluence tube control flap 6, supplying water shunts tube control flap 7, adjustment backwater diffluence tube control flap 6,
It supplies water and shunts tube control flap 7 to corresponding same aperture, control flow to institute evaluation G12, for guarantee user side flow and
User side heat source water flow remains unchanged, and adjustment makes mixed flow flow meet user side circulation for 11 flow of hot side variable frequency pump
The requirement of flow and bypass flow, i.e. G1=Gm+G13。
In next control cycle T, continue to adjust according to above method according to Changes in weather, be repeated in step IV,
Step V, step VI.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (8)
1. a kind of method of same heat source system heat supply and accumulation of heat decoupling operation, it is characterised in that: the following steps are included:
(I) budgetary estimate is for hot side design heating load
Using volume heating index method or the budgetary estimate of square therm alindex method for hot side design heating load；
(II) is calculated for hot side quantity of circulating water；
According to for hot side design heating load, being calculated for hot side quantity of circulating water in step (I)；
The starting of (III) system
Starting carries out heat supply and accumulation of heat with heat source system, and guarantees the constant high temperature accumulation of heat of accumulation of heat side；
(IV) is calculated for hot side thermic load
The setting control period calculates thermic load needed for heating according to outdoor temperature variation in control cycle time section；
(V) is calculated for hot side supply water temperature
Within the control period, it is assumed that user side flow is constant, and return water temperature is constant, hot for hot side according to what is calculated in step (IV)
Carry calculation is for hot side supply water temperature；
The adjustment of (VI) user side supply water temperature
Mixed flow flow is calculated according to for hot side supply water temperature, so that adjusting control valve door, guarantees that user side circular flow is constant, lead to
The supply water temperature for changing user side is crossed, realizes that heating load and calorific requirement balance.
2. the method for a kind of same heat source system heat supply according to claim 1 and accumulation of heat decoupling operation, it is characterised in that: step
Suddenly as follows for the formula of hot side design heating load with the budgetary estimate of volume heating index method in (I):
Q’n=qvVw(tn-t’w)×10-3kW
Wherein, Q 'n--- the design space-heating load of building, kW；
Vw--- architecture enclosing volume, m3；
Tn--- design indoor temperature for heating, DEG C；
t’w--- heat outdoor calculating temperature, DEG C；
qv--- the space-heating load data per unit building volume of building, W/ (m3DEG C), qvIndicate all kinds of buildings, indoors 1 DEG C of the outer temperature difference
When, every 1m3The space heating load of architecture enclosing volume.
3. the method for a kind of same heat source system heat supply according to claim 1 and accumulation of heat decoupling operation, it is characterised in that: step
Suddenly as follows for the formula of hot side design heating load with the budgetary estimate of square therm alindex method in (I):
Q’n=qf·F×10-3kW
Wherein, Q 'n--- the design space-heating load of building, kW；
The construction area , ㎡ of F --- building；
qf--- the space-heating load data per unit floor area of building, W/m2, qfIndicate the space heating load of every 1 ㎡ construction area.
4. the method for a kind of same heat source system heat supply according to claim 1 and accumulation of heat decoupling operation, it is characterised in that: step
Suddenly in (II) for hot side quantity of circulating water can following formula be determined:
Wherein, Q 'n--- heating side design heating load；
τ’1--- the design supply water temperature at network, DEG C,
τ’2--- the design temperature of return water at network, DEG C,
The quality specific heat of c --- water, c=4.1868kJ/ (kg DEG C)=1kcal/ (kg DEG C),
The design supply water temperature is the maximum water temperature of heat source, i.e. T 'g；The design temperature of return water is T 'h；
Then for hot side quantity of circulating water
5. the method for a kind of same heat source system heat supply according to claim 1 and accumulation of heat decoupling operation, it is characterised in that: step
Suddenly (III) system starting specifically includes the following steps:
Before system formally puts into operation, backwater diffluence tube control flap, water supply isocon are controled valve closing, accumulation of heat side control valve
Door is opened, and is opened for hot side control valve；
Start heat source, heat source leaving water temperature TgIt remains unchanged, occurrence T 'g, adjust heat-source Cycles water, heat source water flow
G11It remains unchanged, occurrence G '11, heat source water flow is equal to user side circular flow GmWith accumulation of heat side circular flow GxIt
With i.e. G11=Gm+Gx；Heat source voluntarily adjusts power according to return water temperature heat source；
Start accumulation of heat side water pump, keep power constant, guarantees accumulation of heat side circular flow GxFlow is certain, guarantees the constant of accumulation of heat side
High-temperature heat accumulation.
6. the method for a kind of same heat source system heat supply according to claim 1 and accumulation of heat decoupling operation, it is characterised in that: step
Suddenly the calculation formula of thermic load needed for heating in (IV) is as follows:
The setting control period is T, and in T time section, changing thermic load needed for calculating heats according to outdoor temperature is Q,
In formula:
Q’n--- for hot side design heating load；
ti--- heating indoor design temperature, DEG C, generally take ti=18 DEG C；
tw--- in cycle T, predict the average outdoor temperature in the T period, DEG C；
t0--- outdoor design temperature for heating, DEG C.
7. the method for a kind of same heat source system heat supply according to claim 1 and accumulation of heat decoupling operation, it is characterised in that: step
Suddenly (V) is calculated for hot side supply water temperature, specifically includes the following steps:
In control cycle T, user side flow GmIt is constant, changed according to outdoor weather, by changing user side supply water temperature Tm,
Maintain return water temperature ThIt is constant come realize heating load and calorific requirement balance；
Q in formula --- in control cycle T, for hot side thermic load；
The quality specific heat of c --- water, c=4.1868kJ/ (kg DEG C)=1kcal/ (kg DEG C)；
G’m--- for hot side design cycle water, m3/h；
T’h--- for hot side return water design temperature, DEG C.
8. the method for a kind of same heat source system heat supply according to claim 1 and accumulation of heat decoupling operation, it is characterised in that: step
Suddenly (VI) user side supply water temperature adjusts, comprising the following steps:
User side circular flow is certain, by changing the supply water temperature of user side, realizes that heating load and calorific requirement balance.
Guarantee user side heat source water flow G11With user side flow GmIt is constant and equal, i.e. G11=Gm；
Adjustment reaches user side supply water temperature Tm, specific as follows: backwater diffluence a part after mixed flow is mixed with heat source water outlet, is returned
Water shunt temperature is Tx, flow G12；Heat source leaving water temperature is T 'g, flow G11；Water supply mixed flow temperature is Tm, flow G1,
Water supply mixed flow node meets flow equilibrium and heat balance, flow equilibrium, that is, G1=G11+G12；
To make mixed flow temperature reach Tm, high temperature fluid thermal discharge is identical as cryogen caloric receptivity, i.e. cG12(Tm-Tx)=cG11
(T’g-Tm)
Adjustment reaches user side water supply flow Gm, specific as follows: temperature Tm, flow G1Mixed flow water, distribute a part with
Return water mixed flow, flows back to heat source, and water supply shunt temperature is Tm, water supply bypass flow G13With backwater diffluence flow G12It is equal；Return water temperature
Degree is Th, flow Gm；Mixed flow flow is G1, temperature TX, return water mixed flow node meets flow equilibrium and heat balance, flow
Balance is G1=G13+Gm；
High temperature fluid thermal discharge is identical as cryogen caloric receptivity, i.e. cG13(Tm-Tx)=cGm(Tx-T’h)
Make G12=G13,Gm=G11, guarantee, i.e. G constant for hot side circular flowm=G 'm
Make Tx-T’h=T 'g-Tm=△ T calculates mixed flow return water temperature Tx=Tg’-Tm+T’h
In summary formula, can be according to for hot side supply water temperature TmCalculate mixed flow flow
Open backwater diffluence tube control flap, supplying water shunts tube control flap, adjustment return water tube control flap, water supplying pipe control valve
Door controls flow to institute evaluation G to corresponding same aperture12, to guarantee that user side flow and user side heat source go out water flow
Amount remains unchanged, and adjustment makes mixed flow flow meet wanting for user side circular flow and bypass flow for hot side variable frequency pump flow
It asks, i.e. G1=Gm+G13。
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