Solar energy-ground source heat pump coupled biogas pool heating system and operational control method

A ground source heat pump and heating system technology, which is applied in the field of new energy development and application, can solve the problems that the solar heating system cannot meet the heating requirements of the biogas digester, the underground temperature is lowered, the system performance coefficient is lowered, etc., and the long-term economic and environmental benefits can be achieved. , The effect of solving heating instability and improving heating efficiency

Active Publication Date: 2011-02-16
上海林海生态技术股份有限公司
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Problems solved by technology

[0007] Starting from energy cascade utilization and system energy efficiency coefficient (COPs) maximization, the present invention effectively combines solar heat collection technology and ground source heat pump technology to solve the problem that a single solar heating system cannot meet the needs of biogas digesters in rainy days and winter. temperature requirements, as well as the year-round operation of a single ground source heat pump system caused by the reduction of underground temperature and t...

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  • Solar energy-ground source heat pump coupled biogas pool heating system and operational control method
  • Solar energy-ground source heat pump coupled biogas pool heating system and operational control method

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Embodiment 1

[0032] Embodiment 1: For a certain effective volume is 69.3m 3 The fully mixed fermenter, the present invention has selected four total 26m 2 The solar all-glass vacuum tube heat collecting module with the heat collecting area, and connect four heat collecting modules in series to form a solar all glass vacuum tube heat collector; 0.6MPa, the actual pressure is 0.2Mpa, and the heat preservation requirement is that the temperature drop of the water in the water tank is less than 1°C / day; the heat pump unit used is a ground source / water source heat pump unit, and its nominal heating capacity is 18.3kW; U-shaped buried pipe heat exchange The device is composed of five φ25*2.8 PE single U-shaped tubes connected in parallel, and the vertical depth of the buried tube is 100m; the coil heat exchanger is made of φ25*2.8 PERT tubes, and is arranged on the four walls and the At the bottom of the pool, the total length of the coil is 200m.

[0033] Such as figure 1 As shown, the solar...

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Abstract

The invention belongs to the field of new energy development and application, and particularly relates to a solar energy-ground source heat pump coupled biogas pool heating system and an operational control method thereof. The solar energy-ground source heat pump coupled biogas pool heating system is divided into five operating modes, namely solar energy direct heating, solar energy-ground sourceheat pump series heating, solar energy heat pump heating, individual ground source heat pump heating and solar energy underground heat storage according to the temperature gradient of hot water prepared by a solar heat collector by combining a relation curve of the COP (coefficient of performance) of a heat pump unit and the water inlet temperature of an evaporator. The method remarkably improvesthe heating efficiency of the heat pump unit and the system by fully using low-grade solar energy and ground heat energy, can supply heat to a biogas fermentation pool efficiently and stably for a long term, and has long-term economic and environmental benefits.

Description

technical field [0001] The invention belongs to the field of new energy development and application, and relates to a heating system, in particular to a solar energy-ground source heat pump coupled biogas pool heating system and an operation control method. Background technique [0002] The gradual depletion of fossil energy has caused many countries in the world to focus on the field of new energy. Anaerobic fermentation biogas technology, as a way of utilizing biomass waste, can recover energy and solve environmental pollution problems, so it has been highly valued by governments of various countries. In my country, by the end of 2005, 18 million households nationwide used biogas, and the annual production of biogas was about 6.9 billion cubic meters. At the same time, 3,500 farm biogas projects have been built, and 700 large and medium-sized biogas projects have been built nationwide. [0003] However, at present, the industrialization of biogas projects is still facing...

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Application Information

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IPC IPC(8): F24J2/05C12M1/34F24H4/02C12M1/107F24J2/40C12M1/36F24J2/34F24S10/40
CPCY02E50/343Y02E10/44C12M41/24C12M43/00C12M23/18C12M41/18C12M21/04Y02E50/30Y02P20/59
Inventor 石惠娴朱洪光雷勇裴晓梅张迪
Owner 上海林海生态技术股份有限公司
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