PIZZATO Switch FR 213-M2

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

02/24/2023

The Differences Between Butterfly Valve and Ball Valve

The biggest difference between butterfly valve and ball valve is that the opening and closing part of butterfly valve is a plate, while the ball valve is a ball.

06/14/2020

The reason for the failure of the multi-line air-conditioning compressor is revealed!

The failure of motor compressor (hereinafter referred to as compressor) can be divided into motor failure and mechanical failure (including crankshaft, connecting rod, piston, valve plate, cylinder head gasket, etc.). Mechanical failures often overload器2䀀
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06/14/2020

The brain hole is wide open! Japanese companies have introduced summer cooling masks,

The brain hole is wide open! Japanese companies have introduced summer cooling masks, which can be added to the refrigerator and frozen in the refrigerator after repeated use of the brain hole! Japanese companies introduced summer cooling masks, which can器2䀀
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08/19/2020

How to judge whether the refrigeration equipment is working normally

The relevant valves and equipment in the refrigeration equipment system are in their proper state. The compressor suction and discharge valves, the inlet and outlet valves of the oil separator

09/01/2020

The most complete version｜Basic theoretical knowledge of compressed air (2)

Six, compression and compression ratio 　　1, compression 　　 Adiabatic compression is a compression process in which gas heat is not significantly transferred or transferred during the compression process.

06/25/2020

Compression refrigerator

A refrigerator that relies on a compressor to increase the pressure of a refrigerant to achieve a refrigeration cycle. Compression refrigerator is composed of compressor, condenser (condenser), refrigeration heat exchanger (evaporator), expander or throttle mechanism and some auxiliary equipment. The compressor is its core equipment.

08/02/2020

Type selection calculation of pressure difference bypass regulating valve for chilled water system

In order to ensure that the flow of the chiller in the central air conditioning chilled water system is basically constant; the operating conditions of the chilled water pump are stable, the generally adopted method is:

08/14/2020

How to extend the service life of cold storage

We all hope that our cold storage can last longer. How can we achieve this effect? We will discuss with you in detail in terms of usage habits and maintenance:

06/14/2020

Basic structure of piston refrigeration compressor

Piston refrigeration compressor is mainly composed of body, crankshaft, connecting rod, piston group, valve, shaft seal, oil pump, energy adjustment device, oil circulation system and other components.