Lumped closed constant pressure expansion device for ground-source heat pump system of medium and low rise building

A ground source heat pump and expansion device technology, applied in heat pump, heating mode, air conditioning system, etc., can solve the problems of large installed capacity of equipment in the equipment room, no installation space in the equipment room, and high equipment installation cost, so as to reduce the amount of electrical engineering and maintenance. The effect of reducing the workload and reducing the amount of engineering

Active Publication Date: 2013-07-17
ZHEJIANG LUTE ENERGY TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned scheme has improved some technical problems of the existing ground source heat pump system to a certain extent, the scheme has at least the following disadvantages: 1. There are two sets of constant pressure water replenishment systems, the structure is relatively complicated, and the required installation location is large. Some projects do not have enough installation space in the computer room; 2. The equipment in the computer room has a large installed capacity, many power supply circuits, and a large amount of engineering; 3. The cost of equipment and installation is high

Method used

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  • Lumped closed constant pressure expansion device for ground-source heat pump system of medium and low rise building
  • Lumped closed constant pressure expansion device for ground-source heat pump system of medium and low rise building
  • Lumped closed constant pressure expansion device for ground-source heat pump system of medium and low rise building

Examples

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Effect test

Embodiment 1

[0023] Such as figure 1 As shown, this is a lumped closed constant pressure expansion device used in the ground source heat pump system of low and medium buildings. The ground source heat pump system includes a ground source side water circulation system 11, and a ground source heat pump unit 12 is connected to the ground source side water circulation system 11. , the load-side water circulation system 13 is connected to the ground source heat pump unit 12, in order to reduce the floor area required for installation, and also reduce the engineering quantity and engineering cost of equipment and installation (the less the equipment is invested, the lower the cost ) to reduce the maintenance workload. This device includes an expansion main pipe 21, a first expansion branch pipe 22 connected to the ground source side water circulation system 11, and a second expansion branch pipe 23 connected to the load side water circulation system 13. The first expansion branch pipe 23 Both th...

Embodiment 2

[0033] Such as figure 2 As shown, the structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference lies in: the ground source heat pump unit 12 is a ground source heat pump unit with a heat recovery water system 14, and the heat recovery The water system 14 is connected to the expansion main pipe 21 through the third expansion branch pipe 24 . The cross-sectional area of ​​the expansion main pipe 21 is not less than the sum of the cross-sectional areas of the first expansion branch pipe 22 , the second expansion branch pipe 23 and the third expansion branch pipe 24 .

[0034] In this embodiment, when the water temperature on the heat recovery side continues to rise, the heat recovery water system 14 expands outward through the third expansion branch pipe 24 to maintain a constant pressure, and at the same time, the water temperature on the load side continues to drop, and the water circulation system 13 on the load side needs to re...

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Abstract

The invention belongs to the technical field of ground-source heat pump, in particular to a lumped closed constant pressure expansion device for ground-source heat pump systems of medium and low rise buildings. The lumped closed constant pressure expansion device solves the problems of unreasonable design of the prior art and big installation area. The ground-source heat pump system includes a ground-source side water circulatory system, a ground-source heat pump unit is connected with the ground-source side water circulatory system, and a load side water circulatory system is connected with the ground-source heat pump unit. The pressure expansion device consists of a main expansion pipe, a first secondary expansion pipe connected with the ground-source side water circulatory system and a second secondary expansion pipe connected with load side water circulatory system, wherein the first secondary expansion pipe and the second secondary expansion pipe are connected with the main expansion pipe and the main expansion pipe is connected with a water system constant pressure expansion structure. Compared with the prior art, the constant pressure expansion device is more reasonable in design, small in installation area and low in cost.

Description

technical field [0001] The invention belongs to the technical field of ground source heat pumps, and in particular relates to a lumped closed constant pressure expansion device used in ground source heat pump systems of middle and low-rise buildings. Background technique [0002] Ground-source heat pump heating and air-conditioning systems have good energy-saving and environmental protection effects. In recent years, more and more projects use ground-source heat pump technology for heating and air-conditioning in new construction and renovation projects in various places. The application scope of the ground source heat pump system has involved various public buildings, residential buildings and some industrial buildings, and the application scale is also expanding. Ground source heat pump systems can be divided into three categories: buried pipe ground source heat pump systems, also known as soil source ground source heat pump systems, groundwater ground source heat pump sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F25B30/06
Inventor 潘金文石磊王盼
Owner ZHEJIANG LUTE ENERGY TECH
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