Energy-saving constant-temperature humidity-control air conditioning system capable of utilizing cooling tower to supply cold in winter and temperature-controlled dehumidifying method

Abstract

The invention relates to a constant-temperature humidity-control air conditioning system. The constant-temperature humidity-control air conditioning system comprises an energy-saving constant-temperature humidity-control unit for cooling and dehumidifying a casting workshop, wherein the energy-saving constant-temperature humidity-control unit comprises an air return section, a rotary wheel dehumidifying section, a rear heat exchange section and a fan section which are sequentially in communication from front to rear, wherein a regenerating heater is mounted at a regenerating region inlet of the rotary wheel dehumidifying section; a regenerating fan is mounted at a regenerating region outlet of the rotary wheel dehumidifying section; the air return section communicates with an air return hole of the casting workshop through an air return tube; and the fan section communicates with an air feeding hole of the casting workshop through an air feeding tube. The energy-saving constant-temperature humidity-control air conditioning system solves requirements, on a constant-temperature low-humidity environment, of a precise casting shell-making drying process, realizes temperature and humidity independent control, reduces workpiece drying time, improves production efficiency, reduces energy consumption, and also solves the problem that freeze water cannot be normally supplied as a waterchilling unit cannot normally operate under a low-temperature environment.

Description

technical field [0001] The invention relates to a constant temperature and humidity control air conditioning system, more specifically, to an energy-saving constant temperature and humidity control air conditioning system and a temperature control and dehumidification method that can be used in the precision casting industry and can use a cooling tower for cooling in winter. Background technique [0002] Cooling towers are commonly used cooling equipment in central air-conditioning systems and process cooling systems. The principle of cooling tower cooling is: water absorbs heat during evaporation to reduce the temperature of water that has not evaporated. The degree of water temperature reduction depends on the amount of evaporation. Evaporation The amount of water depends on the degree of saturation of the air. First, the cooling water contacts the air in the cooling tower for heat and moisture exchange. As long as the wet bulb temperature is lower than the temperature of t...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide an energy-saving constant temperature and humidity control air-conditioning system and a temperature control dehumidification method that can use cooling towers for cooling in winter. The problem that chilled water cannot be supplied normally due to operation has reduced the failure rate of equipment and improved the operating conditions of equipment; second: the use of natural cold sources for cooling through cooling towers has solved the cooling demand of process production and reduced the operating conditions of refrigeration units. running time, so as to obtain significant energy-saving effect and reduce energy consumption; third: use the cooling water storage tank to store cold under the condition of low production load, and maximize the use of natural cold sources; fourth: provide a The temperature and humidity independent control air-conditioning equipment and control method required by the low-humidity production environment; fifth: by recycling the waste heat of high-temperature and high-humidity exhaust gas for preheating the regenerated fresh air, the inlet air temperature is increased, energy consumption is reduced, and energy saving is saved. Operating costs

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