Distributed double-sided joint heat storage device for thermal power station
A heat storage device and distributed technology, which is applied in heating methods, heating systems, household heating, etc., can solve the problems of inability to effectively increase the utilization hours of basic heat sources, high operating costs of heating systems, and low heating economy and other issues, to achieve the effect of low construction cost, low working temperature, high safety and reliability
Active Publication Date: 2020-05-26
HARBIN INST OF TECH
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[0005] The present invention provides a distributed double-sided combined heat storage device for a thermal station to solve the problem that the existing two heat storage schemes cannot effectively increase the utilization hours of the basic heat source when the heat load significantly fluctuates within a day. Small heat temperature difference, high operating cost of the heating system, and low economic efficiency of district heating
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[0018] Example: Assume that a thermal station supplies heat to a group of public buildings, with a total heating area of 100,000 m 2 , design area thermal index 75W / m 2 . The building complex has an office heat load during office hours from 6:00 to 22:00, and an on-duty heat load from 22:00 at night to 6:00 the next day. The interior design temperature of the building is different in different time periods, so the heat station There is a significant diurnal cycle variation in the load.
[0019] Assume that the necessary load calculation parameters are as follows in Table 1-Table 3:
[0020] Load calculation parameter table 1
[0021] total heating area heat index per unit area Heating outdoor design temperature S=100,000m 2
q=75W / m 2
t a ＝-12℃
[0022] Load calculation parameter table 2
[0023] office hours duty time 6:00-22:00 (total 16 hours) 22:00-6:00 the next day (total 8 hours)
[0024] Load calculation ...
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The invention discloses a distributed double-side combined heat accumulation device for a heating station, relates to a heat supply system and aims at solving the problems that the number of utilization hours of a basic heat source cannot be effectively increased by the two existing heat accumulation schemes, the heat accumulation temperature difference is small, the operation cost of the heat supply system is high and the economical efficiency of regional heat supply is relatively low when relatively large intraday fluctuation remarkably exists in a heat load. The distributed double-side combined heat accumulation device comprises a replaceable normal-pressure heat accumulator, a secondary network circulating pump, a primary network and a secondary network and also comprises a heat exchanger, a heat accumulation pump, a heat release pump, a water supply side heat accumulation valve, a water return side heat accumulation valve and a heat release valve; the heat exchanger is arranged between the primary network and the secondary network; a water supply side pipe is provided with the water supply side heat accumulation valve; a heat accumulation pipe is provided with the heat accumulation pump; a primary heat release pipe is provided with the heat release valve; a secondary heat release pipe is provided with the heat release pump; and a water return side pipe is provided with the water return side heat accumulation valve. The distributed double-side combined heat accumulation device is used for the heat supply system.
Description
technical field [0001] The invention relates to a heat supply system, in particular to a distributed double-sided combined heat storage device for a thermal station. Background technique [0002] When the heat load of the heating system has large daily fluctuations, in order to reduce the operating time of the peak-shaving heat source as much as possible and increase the utilization hours of the basic heat source, heat storage devices have been widely used in the heating system. [0003] At present, the common heat storage schemes include "centralized heat storage at the heat source" and "distributed secondary side heat storage in thermal power stations". However, these two schemes have their own defects: [0004] Although the centralized heat storage at the heat source has a large heat storage temperature difference and is easy to manage and maintain, the pressure level of the heat accumulator is high, and the construction cost per unit volume of the heat accumulator is exp...
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IPC IPC(8): F24D3/10
CPCF24D3/10
Inventor 周志刚王晋达赵加宁郑进福
Owner HARBIN INST OF TECH
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