Thermoelectric double-drive heat pump system for storing and taking winter and summer waste heat of power plant across seasons by utilizing soil
A cross-season, pump system technology, used in heating systems, heat recovery systems, hot water central heating systems, etc., can solve problems such as reducing the temperature of primary network return water, improve system economy, reduce energy consumption, and save energy. Heat grade adjustable and controllable effect
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Embodiment 1
[0045] like figure 1 As shown, this embodiment discloses a thermoelectric dual-drive heat pump system that uses soil to store waste heat in winter and summer in power plants across seasons, including a steam turbine 1 that provides steam extraction and exhaust steam, a condenser 2 that recovers exhaust steam waste heat, and a primary heating The steam type absorption heat pump of the network 3, the third heat exchanger for steam extraction and primary network heat exchange 4, the electric compression heat pump 5, the hot water type absorption heat pump 6, the first heat exchange for primary and secondary heat exchange 7, the second heat exchanger 8 for exchanging heat between the heating network water and the circulating water, and the soil heat exchanger 9 for exchanging heat with the soil.
[0046] This embodiment is aimed at systems with relatively high heating parameters of the secondary network (such as radiators). The steam turbine 1 includes at least one set of steam tu...
Embodiment 2
[0067] This embodiment is aimed at the heat supply system in which the steam turbine 1 is a direct air cooling unit.
[0068] like figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the connection form of the exhaust steam cold end is different: in this embodiment, the exhaust steam pipeline P17 is installed on the exhaust steam inlet pipe of the condenser 2 to introduce the air cooling island to dissipate heat, and Set the control valve V8 on the exhaust steam pipeline P17, and adjust the heat dissipation of the air-cooled island by adjusting the opening of the valve V8. Specifically, a pipeline P17 is connected to the pipeline P9, the end of the pipeline P17 is connected to the air cooling island, and a valve V8 is arranged on the pipeline P17. The rest of the structure of this embodiment is completely the same as that of Embodiment 1, and will not be repeated here.
Embodiment 3
[0070] This embodiment is aimed at systems with relatively low heating parameters of the secondary network in winter (such as radiant floor heating).
[0071] like image 3 As shown, the difference between this embodiment and Embodiment 1 is that, due to the low heating parameters of the secondary network in winter, the thermoelectric dual-drive unit only retains the hot water absorption heat pump 6 module, and does not use the electric compression heat pump 5 Module, the specific connection method is: add pipeline P56, pipeline P57, valve V35, valve V36, valve V37, valve V38; The outlet 63 of the absorption heat pump evaporator is communicated with the pipeline P49, and the water outlet of the pipeline P57 is located between the valve V27 and the first circulating water pump 10. The valve V35 is arranged on the pipeline P56, the valve V36 is arranged on the pipeline P36 and is located downstream of the pipeline P56 water inlet, the valve V37 is arranged on the pipeline P37 a...
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