1 casing:
Cooling capacity in 4, 6, 8, 12 and 25KW, so basically the refrigeration capacity in 12KW the following models due to its lighter, all made Aluminum Alloy framework, inside the tin plastic door, all objects, such as water tank, water pump and compressor frame weight all welded with angle the bottom bracket is supported and fixed. Below the bottom of the connecting rubber foot, complete vibration; natural cooling slot rubber feet and the ground formation of the gap and the door can form natural convection complete compressor and pump. The 12KW model of the machine is more heavy, considering the stiffness of the iron frame, but it is roughly the same structure.
2 cooling system and cooling water circulation system
The utility model is composed of a single-stage refrigeration system with R22 as the working substance and a cooling water circulation system with a water pump as a power, and the two systems are connected by an evaporator. Refrigeration systems such as filters, or split chillers, indoor and outdoor connection pipes and valves; water systems, such as: water filters and the use of various types of ball valves, for the sake of simplicity are not drawn. From here you can see that, plus in the refrigeration load on the system is composed of the "host" (such as accelerator and nuclear magnetic resonance heating equipment) and pump CO produced, selection of efficient pump becomes the premise of optimization design, please look at the following example.
In the early and mid 90s, we have a "one" with the heat of the host, the design of a chiller. Part of the main parameters of the host side are as follows: (1) the host heat is 7KW; (2) the pump flow is 2m3/h, lift of 50 meters, with anti-corrosion pump. The face of the small flow, high lift, but also with stainless steel pump, it is difficult to buy. After multi looking, the result of the motor power is 7.5KW. Through the extensive collection of non-standard pump product samples, the same pump motor power is 1.1KW, the design for the second sets of water cooling machine, compressor power, condenser and evaporator area and the size decreased a lot. As an example, a deep impression: energy saving, key production options.
3 electrical control: there are two kinds of traditional mechanical and electrical control and computer programming. The former is easy to maintain, the price is cheap; the latter water temperature display is intuitive, but the price is more expensive, the maintenance personnel requirements, not detailed.