Erdos surface cooler air cooler evaporator manufacturer

Erdos surface cooler air cooler evaporator manufacturer

1、 Introduction to surface coolers

The full name of the surface cooler isSurface coolerIt is a universal heat exchange device specifically designed to exchange heat with air, with the core function of cooling and dehumidifying the air.

1. working principleLow temperature medium is introduced into the interior of the heat exchange coil, and when the air to be treated is forcibly swept over the surface of the finned coil, heat is transferred to the cold medium inside the coil, and the air temperature decreases accordingly; If the surface temperature of the coil is lower than the dew point temperature of the air, water vapor in the air will also condense and precipitate, while completing the dehumidification process.

2. Common CategoriesAccording to the medium inside the tube, it can be divided into two types: ① Water cooled surface cooler: the most mainstream type is a liquid cooling medium without phase change, such as chilled water or ethylene glycol solution, that is above 0 ℃ inside the tube; ② Direct evaporative surface cooler: Low temperature and low-pressure refrigerant is passed through the tube, and cooling is achieved by evaporating and absorbing heat from the refrigerant. Structurally, it adopts a finned tube design, and the air side heat transfer efficiency is greatly improved by external aluminum fins.

3. Typical ApplicationsScenarios such as air conditioning fan coil units, air cabinets, fresh air systems, industrial dehumidification/drying equipment, and purification air conditioners.

Erdos surface cooler air cooler evaporator manufacturer

2、 Introduction to evaporator

The evaporator is one of the four core components of the refrigeration cycle (compressor, condenser, throttling device, evaporator). Its core function is to absorb heat through the vaporization phase change of low-pressure and low-temperature refrigerant inside the tube, and output refrigeration capacity to the outside. Its cooling object can be either air or liquid media such as water and salt water.

3、 The relationship and core difference between the two

In many scenarios, the two are easily confused, and the core differences are as follows:

1. Dependent associationThe essence of a direct evaporative surface cooler is the commercial term for a "cooling air evaporator" - when a refrigerant that vaporizes and absorbs heat is introduced into the surface cooler tube, it belongs to the category of an evaporator. The two terms only focus on different dimensions: the evaporator focuses on the properties of the refrigeration cycle components, and the surface cooler focuses on the structural properties of air heat exchange.

2. Differences in functional positioningA surface cooler is a single air heat exchange component that can work independently of the refrigeration cycle (such as a water-cooled surface cooler that only needs to be connected to an external cold water system to operate); The evaporator is an essential component of the refrigeration cycle and must be connected to a complete refrigeration system to function effectively. The cooling target is not limited to air.

3. Differences in heat exchange logicThe cooling medium inside the tubes of ordinary water-cooled surface coolers only experiences temperature rise without phase change, resulting in low heat transfer efficiency; The refrigerant inside the evaporator tube will definitely undergo a phase transition from liquid to gas, and the heat transfer efficiency is much higher than that of water-cooled surface coolers without phase transition.

4. Differences in temperature zone adaptationThe working temperature range of ordinary water-cooled surface coolers is usually above 0 ℃ to avoid the freezing and cracking of the medium inside the pipes; And the evaporator can adapt to low-temperature scenarios of minus tens of degrees Celsius, supporting low-temperature cooling needs such as cold storage and quick freezing production lines.