A solar heat and power cogeneration system with controllable water temperature

Abstract

The invention provides a solar energy combined heat and power generation system capable of controlling water temperature. The solar energy combined heat and power generation system capable of controlling the water temperature comprises a heat source side circulation loop and a cooling water circulation loop, a temperature control device is arranged between the heat source side circulation loop and the cooling water circulation loop, and the temperature of the heat source side circulation loop and the temperature of the cooling water circulation loop are controlled through a control electromagnetic valve of the temperature control device. The solar energy combined heat and power generation system capable of controlling the water temperature can realize utilization of low-grade heat, thereby reducing fossil energy consumption and pollutant discharge, an organic Rankine cycle combined heat and power generation system using organic working media can output heat energy to users while outputting electric energy from a medium and low temperature heat source at the temperature from 80 DEG C to 370 DEG C, and therefore the overall economy of the system is improved.

Description

technical field [0001] The invention relates to a solar heat and power cogeneration system, in particular to a solar heat and power cogeneration system with controllable water temperature. Background technique [0002] With the development of the human economy and the improvement of living standards, the consumption of fossil energy such as coal, oil and natural gas has risen sharply, and serious environmental pollution and greenhouse effect have resulted. Energy crisis and environmental pollution have become urgent problems in today's society. In this context, solar energy, as a clean and renewable energy source, plays an important role as an alternative energy source and in protecting the environment. [0003] There are two main production methods of solar power generation: light-electricity and light-thermal-electricity. Among them, photo-electricity production is too inefficient to play the role of energy saving and emission reduction. Photo-thermal-electricity is a g...

AI Technical Summary

Problems solved by technology

However, in this system, there are two problems in terms of temperature: one is that the heat collection temperature of the solar collector is 300-400°C, but for the organic Rankine cycle, the required heat source temperature is often 160°C

The problems in these two aspects will lead to the cogeneration system not being able to operate safely and fail to meet the production requirements

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