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Method and device for treating air at tail end of air-conditioning system

A technology for air treatment and air conditioning systems, applied in air conditioning systems, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve the problems of inapplicability to large-scale central air conditioning systems and high energy consumption of air conditioning systems, and achieve applicability, The effect of reducing total investment and obvious energy saving benefits

Active Publication Date: 2012-08-01
THE ARCHITECTURAL DESIGN & RES INST OF ZHEJIANG UNIV +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this technical solution is used in an air-conditioning system, it can only be used in a decentralized air-conditioning system. It is a direct evaporative cooling air-conditioning system, which is suitable for split air-conditioning systems and roof air-conditioning systems, and is not suitable for use of refrigerant as a delivery medium. large-scale central air-conditioning system
And above-mentioned air-conditioning system is a kind of straight-through type air-conditioning system (air-conditioning system of fresh air), although this air-conditioning system takes measures as far as possible to recover the loss of cold (heat) amount caused by a large amount of exhaust air, but the energy of its air-conditioning system The consumption is also much higher than that of the hybrid air conditioning system

Method used

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  • Method and device for treating air at tail end of air-conditioning system
  • Method and device for treating air at tail end of air-conditioning system
  • Method and device for treating air at tail end of air-conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Depend on Figure 4 As shown, a method for treating air at the end of an air conditioning system, including: the indoor return air N is filtered and cooled by a high-temperature cold source to obtain primary cooling indoor return air L2, and the outdoor fresh air W is filtered and cooled by a high-temperature cold source to obtain outdoor fresh air for primary cooling L1, the primary cooled indoor return air L2 and outdoor fresh air L1 are mixed to obtain mixed air L, which is cooled by a low-temperature cold source and dehumidified to obtain dew point air supply state point air S, and finally discharged into the room by the fan.

[0066] The parameters involved in the above process are as follows:

[0067] Outdoor parameters: the outdoor dry bulb temperature of the air conditioner in summer is 35.7°C, and the outdoor wet bulb temperature of the air conditioner in summer is 28.5°C.

[0068] The indoor design parameters are: the summer indoor design temperature is 26°C,...

Embodiment 2

[0072] Depend on Figure 5 As shown, a method for air treatment at the end of an air conditioning system, including: indoor return air N and outdoor fresh air W are first mixed to form mixed air M, mixed air M is filtered and then cooled by a high-temperature cold source to obtain primary cooled mixed air L1, primary cooled The mixed air L1 is cooled by a low-temperature cold source and moisture is removed to obtain dew point air supply state point air S, and finally discharged into the room by the fan.

[0073] The parameters involved in the above process are as follows:

[0074] Outdoor parameters: the outdoor dry bulb temperature of the air conditioner in summer is 35.7°C, and the outdoor wet bulb temperature of the air conditioner in summer is 28.5°C.

[0075] The indoor design parameters are: the summer indoor design temperature is 26°C, and the relative humidity is 55%;

[0076] Process control parameters: the high-temperature cold source is chilled water with an outle...

Embodiment 3

[0080] Such as Image 6As shown, a device for realizing the air-conditioning system terminal air treatment method in Embodiment 1 includes: the air inlet 1a is connected to the indoor return air duct for removing the first filter of impurities in the indoor return air; the air inlet 3a is connected to the outdoor The fresh air pipe is connected to the second filter used to remove impurities in the outdoor fresh air; the air inlet 2a is connected to the air outlet 1b of the first filter to the first surface cooler for primary cooling of the indoor return air; the air inlet 4a is connected to the first air cooler The air outlet 3b of the second filter is connected to the second surface cooler for primary cooling of the outdoor return air; the air inlets 5a1, 5a2 are respectively connected to the air outlet 2b of the first surface cooler and the air outlet 4b of the second surface cooler Connected with the first mixer for mixing indoor return air and outdoor fresh air; the air in...

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Abstract

The invention discloses a method for treating air at the tail end of an air-conditioning system. The method comprises the following steps of: filtering indoor return air and then cooling the indoor return air by using a high-temperature cold source to obtain primarily-cooled indoor return air; filtering outdoor fresh air and then cooling the outdoor fresh air by using the high-temperature cold source to obtain primarily-cooled outdoor fresh air; mixing the primarily-cooled indoor return air and the primarily-cooled outdoor fresh air to obtain mixed air; cooling and dehumidifying the mixed air by using a low-temperature cold source, and then delivering the mixed air indoors by a fan; or mixing the indoor return air and the outdoor fresh air, sequentially cooling the indoor return air and the outdoor fresh air by using the high-temperature cold source and the low-temperature cold source, and then delivering the mixed air indoors. The invention also discloses a device for implementing the process. By adoption of the method for treating the air at the tail end of the air-conditioning system, the air-conditioning load bearing proportion of the high-temperature cold source to the low-temperature cold source is reasonably set, the consumption of energy for cooling the air is reduced, and energy efficiency is improved. When applicable to a central air-conditioning system, the method has a good air-conditioning refrigeration effect and is low in operating cost.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning systems, and in particular relates to a method for treating air with dual cold sources at the end of an air-conditioning system and a device for realizing the method. Background technique [0002] The central air conditioning system consists of a cold and heat source system and an air conditioning system. The refrigeration system provides the required cooling capacity for the air conditioning system to offset the cooling load of the indoor environment; the heating system provides heat for the air conditioning system to offset the heat load of the indoor environment. The refrigeration system is a vital part of the central air conditioning system. [0003] The central air-conditioning system can be divided into two categories according to the evaporation temperature of the cold source: single-cooler air-conditioning system and double-cooler air-conditioning system; according to the differe...

Claims

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Application Information

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IPC IPC(8): F24F3/16F24F11/00F24F13/28F24F13/30
Inventor 田向宁丁德杨毅
Owner THE ARCHITECTURAL DESIGN & RES INST OF ZHEJIANG UNIV