Read the questions carefully and hope to answer them carefully and accurately.
1, how can we get high energy efficiency than COP value?:1) in the heat pump system, the key role is the heat carrier refrigerant (it seems to pull the car. To pull; run fast; fast loading and unloading; and fuel-efficient) which requires heat carrier refrigerant refrigerant has in nature, but also has the heat absorption unit to heat, faster and more; the evaporation temperature (refrigerant in two states: liquid and gas conversion temperature) low (-10?? C can still lower critical pressure; heat) to produce hot water of 65 DEG C to requirde refrigerant, is lower than the normal heat pump system (compressor protection protection pressure 2.6MPa, pressure 2.8MPa). Otherwise, the pressure is too high, the compressor is adverse or the compressor into high voltage protection, and can not make high temperature hot water, and even compressor work under high pressure for a long time and damage.2) requires a larger heat exchange area of the evaporator, and air contact surface area is larger, in the same conditions can transport more heat, energy efficiency than COP value will be higher, energy saving.3) the key components in the heat pump compressor, compressor exhaust volume requirements and performance index of row cooling capacity and EER, rotation rate, and to the entire system and the refrigerant used to match, otherwise the refrigerant corrosive effect on copper, damage of heat pump system, Haowate. Amnesty by the United States Copeland compressor. And efficient refrigerant, increases the surface area of the evaporator, so its efficiency is higher than the COP value, efficiency value can reach 4.7 COP
Heat pump technology is a kind of technology to improve energy grade. It is not the process of energy conversion, so it is not restricted by energy conversion efficiency limit 100%, but it follows the principle of inverse Kano. The ratio between the energy transported and the electric energy that drives the heat pump is called the coefficient of thermal performance, also known as energy efficiency ratio (expressed in COP). The COP value is more energy saving and energy efficiency ratio.Two, the core technical problems of air source heat pumpThe core problem of air source heat pump hot water equipment is energy efficiency than the COP value, an important index for evaluating the selected air source heat pump water heating equipment should also be the size of the COP value, COP value is more energy saving.
Principle of pump and heat pump1. The concept of pump: the so-called pump is a device to concentrate and improve the potential energy of the dispersed material. "Heat" is not matter, but energy. The concentration of heat and the increase of potential energy must be carried out through the carrier, and the carrier is the refrigerant. Heat pump is the use of a small amount of high-grade electrical energy as the driving energy, from low temperature scattered heat source, efficient absorption of low-grade thermal energy, and transmission to the high temperature heat source, to achieve the purpose of "pumping heat".2, the concept of heat pump: the most popular heat pump is steam compression heat pump. The working principle of heat pump system, the refrigerant in the evaporator heat after evaporation, evaporation into superheated steam enters the compressor, the compressor by adiabatic compression into a high-temperature high-pressure gas through the condenser for condensing pressure, low temperature and high pressure liquid, the liquid refrigerant through the throttle for low temperature and low pressure liquid into the evaporator, and the constant pressure heat. In the reciprocating cycle. A heat pump water heater is used to transport heat energy from the air to the water to heat it.
