Constant temperature heating system of hothouse

Abstract

The invention provides a constant temperature heating system of a hothouse, comprising a heat source used for preparing hot water and a pipeline used for transporting the hot water to the hothouse to carry out heating. The constant temperature heating system of the hothouse is characterized by also comprising one or a set of water towers, wherein the water towers are used for storing the prepared hot water and supplying pressure needed by water transportation, the pipeline is a parallel water supply pipeline and comprises a main water feeding pipe and a plurality of branch water feeding pipes, wherein the branch water feeding pipes are all communicated with the main water feeding pipe, hierarchically supply heating to a located shed area and sequentially supplement heating for the branch water feeding pipe at the front according to the sequence of from far to near.

Description

technical field [0001] The invention relates to a constant temperature heating technology for an agricultural greenhouse. Background technique [0002] As a representative of modern agriculture, greenhouse agricultural production has been rapidly and widely used and developed due to its high efficiency and low energy consumption. The agricultural greenhouse is heated to ensure a suitable and constant temperature in the greenhouse, thereby improving the efficiency of agricultural production. [0003] However, at present, the heating of greenhouses mainly relies on heat sources to prepare hot water, and then uses high-pressure pumps to transport the prepared hot water through metal pipes in series and one-way to heat the greenhouses. [0004] First of all, with such a delivery method, on the one hand, the high-pressure pump needs to work continuously, which not only consumes huge energy, but also consumes a lot of high-pressure pump itself. Practice has proved that in such a ...

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Problems solved by technology

[0004] First of all, with such a delivery method, on the one hand, the high-pressure pump needs to work continuously, which not only consumes huge energy, but also consumes a lot of high-pressure pump itself. Practice has proved that in such a working environment, the use of high-pressure pumps The service life is basically about 2 years, and the cost of high-pressure pumps is very high, resulting in high operating costs. On the other hand, when pumping well water with high-pressure pumps, alternating impact loads will be generated in the pipelines. Erosion, but also aggravate the corrosion of pipelines

[0005] Secondly, this kind of series-type one-way conveying heating system, because the hot water dissipates heat and cools down successively during the pipeline transportation, the temperature difference between the front and rear sections of the heating pipe network is obvious, which is not conducive to controlling the heating temperature of each area in the greenhouse. At the same time, due to The temperature difference between each section of the heating pipe network is large, which will also cause waste of heat energy

[0006] Finally, the existing greenhouse heating is limited to using the pipe network to heat the greenhouse, and the return water at the end still contains a lot of heat energy and cannot be fully utilized, resulting in a huge waste of heat energy

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