Absorption refrigerator and production method thereof

An absorption refrigerator having a refrigerant and its absorbent, wherein an oxide film having a color of blue, purple, gray or black is formed on a surface of at least one of a heat exchanger and a high temperature regenerator.

An absorption refrigerator having a refrigerant and its absorbent, wherein an oxide film having hydroxyl group is formed on a surface of at least one of a heat exchanger and a high temperature regenerator.

An absorption refrigerator comprising a high temperature regenerator heating a solution comprising a refrigerant and its absorbent and generating vapor, a condenser condensing the vapor, a low temperature regenerator cooling the vapor, an evaporator evaporating the coolant from said condenser and generating cold liquid, an absorber absorbing the refrigerant from said evaporator into the absorbent and a heat exchanger returning the solution from said absorber to said high temperature regenerator and effecting heat exchange between the refrigerant from said low temperature regenerator and the solution from said absorber, wherein an oxide film having thickness 0.02-5.0 μm, a color of blue, purple, black and gray, or hydroxyl group is formed on a surface of at least one of a heat exchanger and a high temperature regenerator.

An absorption refrigerator having a refrigerant and its absorbent, wherein an oxide film having thickness 0.02-5.0 μm, a color of blue, purple, black or gray, or hydroxyl group is formed on the whole surface contacting with liquid, of iron or iron containing material constructing said refrigerator.

An absorption refrigerator having a refrigerant and its absorbent, wherein an oxide film formed on the surface contacting with the absorbent, of iron or iron containing material constructing said refrigerator is thinner in thickness than an oxide film formed on a surface of iron or iron containing material forming piping of a cooling system having a cooling tower, a cold liquid system and a vapor system.

An absorption refrigerator comprising a high temperature regenerator heating a solution comprising a refrigerant and its absorbent and generating vapor, a condenser condensing the vapor, a low temperature regenerator cooling the vapor, an evaporator evaporating the coolant from said condenser and generating cold liquid, an absorber absorbing the refrigerant from said evaporator into the absorbent and a heat exchanger returning the solution from said absorber to said high temperature regenerator and effecting heat exchange between the refrigerant from said low temperature regenerator and the solution from said absorber, wherein an oxide film having thickness 0.02-5.0 μm, a color of blue, purple, black or gray, or hydroxyl group is formed on a portion, contacting with at least one of the solution, the vapor and the refrigerant, and made of iron or iron material, or said high temperature regenerator, condenser, low temperature regenerator, evaporator, absorber and heat exchanger.

A heat exchanger for an absorption refrigerator, having a refrigerant and its absorbent, wherein an oxide film having thickness 0.02-5.0 μm, a color of blue, purple, black or gray, or hydroxyl group is formed on a surface of said heat exchanger.

A high temperature regenerator for an absorption refrigerator, having a refrigerant and its absorbent, wherein an oxide film having thickness 0.02-5.0 μm, a color of blue, purple, black or gray, or hydroxyl group is formed on a surface of said high temperature regenerator.