1. What is the dry bulb temperature and wet bulb temperature?
Dry bulb temperature: The value read on a dry bulb thermometer that is exposed to direct sunlight in the air. That is, the normal temperature of the wet air measured by a normal thermometer. (commonly known as temperature)
Wet bulb temperature: The value read on a wet bulb thermometer that is exposed to the air and is not exposed to direct sunlight. The thermometer mercury ball is wrapped with a water-containing cotton core and has a certain flow rate of air when the cotton core is blown through the temperature indicated by the thermometer. The dry bulb temperature is higher than the wet bulb temperature.
2. What is the noise of the air?
Air energy noise is caused by the compressor operation of the system itself, the operation of the fan, the sheet metal and the vibration of the process tube. National standards have lower requirements for airborne noise: 65 decibels for commercial aircraft and 55 decibels for domestic machines.
The air with good performance can not hear the sound of the compressor and any noise at 2 meters, there is no vibration, and the coin can be erected on the working machine, and the coin does not fall.
3. Is air energy energy related to the environment?
The energy efficiency ratio of air energy is directly related to the ambient temperature. If water is heated at the same temperature, the energy efficiency is proportional to the ambient temperature, the higher the ambient temperature, the higher the efficiency, the lower the ambient temperature, the lower the efficiency, and the refrigerant charge. The amount of injection, inhalation, and exhaust temperature are the main reasons that directly affect energy efficiency.
4, the air can not be exhausted, shut down after 1 hour of starting, can you vent?
No. At this time, the system has already produced a mixed gas. The process is called gas blockage. The gassing is useless. Only re-vacuum and re-feeding. Please pay attention to the absence of air, dust and moisture when entering the system. Otherwise, the system will generate gas. Blocking, dirty plugging, ice blocking, burning the compressor after a long time
5. What kind of air can be used in the north?
Generally speaking, when the ambient temperature is below 7 °C, the suction and heat of the compressor is relatively small, which is not reflected by the protection of any unit. The compressor is prone to heat, the refrigerant cannot be fully evaporated, and the liquid is returned to the compressor and the oil. Thinning, lubrication is affected. If the winter air heat pump water heater is used, if the compressor has too much oil for a long time, then the probability of the compressor being bad is high, which is also a reason for the compressor burning. There is no problem in using the heat pump water heater at an ambient temperature of 7 ° C or higher, but it is not possible at an ambient temperature of 7 ° C or less, so it is necessary to use a low temperature type, and the low temperature type has to increase the cost from the selection of the refrigerant, the configuration of the unit system, etc., so the cost is too high. High, and when the ambient temperature is -15 °C, the condensing temperature is too small, and the exhaust temperature is too high, sometimes the exhaust temperature can reach 100--110 °C, of ​​course, these can be controlled by cooling to control the exhaust temperature, but At this time, the unit efficiency is very low, the COP value is even less than 1, the unit work can work, but there is no effect, the failure rate will be high, the operating condensing temperature of the compressor can reach 60 at the ambient temperature -10 °C. °C degree, 45 °C hot water should be able to produce, and as the ambient temperature decreases, the condensing temperature of the compressor will continue to decrease, when the ambient temperature is low, the water temperature requirement is higher than usual, (summer cold water bath No problem), it is not acceptable to produce 45°C hot water in winter. 1. The human body has high heat supplement requirements. 2. The ambient temperature around the bathroom is low and needs to be replenished. 3. The ambient temperature convection is fast. The condensing temperature of the compressor suction is continuously reduced, and the machine is more likely to be damaged. Therefore, the technology cannot reach this level and can only be electrically assisted. This is why the air-energy water heater is divided into a normal type and a low temperature type, and the real reason for using electric auxiliary heating is used.
Therefore, the use of air in the Yellow River Basin must follow the basic principles of quality first, otherwise the endless troubles.
6, air can often appear high pressure failure is how is it?
The main cause of high-voltage protection failure of air is caused by excessive refrigerant charge and excessive over-cut or exhaust gas temperature, and the high-pressure end steam can not be discharged.
Air can often have low pressure faults, what is going on?
The main reason for the low-voltage protection failure of air is caused by insufficient refrigerant charge and excessively small interception or excessive exhaust gas temperature, and the low-pressure end is deficient in the gas-liquid two-phase state.
7. Why is the air energy evaporator frosted?
Evaporator frosting is a normal phenomenon in air energy work engineering. It is inevitable that air energy heat pump water heaters will produce frost in winter. When we use air conditioner, we will find frost and defrosting of external machine, while indoor unit mainly relies on electric auxiliary heating. Room temperature. Similarly, the heat pump water heater frosting will defrost and defrosting. The configuration of the heat exchanger design system can delay the frosting and reduce the influence of frosting on the performance of the air energy heat pump water heater. It can make the unit frosting slower and the effect on the unit performance after frosting is slower.
1.Name:Pipe PVCwrapping tape
2.Material: Inner layer of Butyl rubber and Outer layer of Polyethylene(PE) Plastic or PP
3.Color:Black , white or others
4.Specifications:as buyer's option
2IN , 4 IN, 6 IN
100 FT, 200 FT , 400 FT
15 MIL, 20 MIL, 25 MIL, 35 MIL
5.Usage:the pipework of oil and natural gas transportation, petrochemical industry, electric power, metallurgy, urban natural gas network of pipes, the outside anticorrosion project of the metal pipes involved as well as the outside anticorrosion project of the underground and overhead metallic conduit of the works of petrochemical industry, natural gas and coal transportation
PVC Wrap Tape, Black PVC Bitumen Tape, PVC Bitumen Adhesive Tape, PVC Pipe Wrapping Tape
Jining Xunda Pipe Coating Materials Co.,Ltd , http://www.pipe-wrap.com