Water in a refrigeration cycle

[MrReds]

Hi Everybody,

hope somebody can help me.

I tried to search in old post but without success.

I am trying to calculate some heat exchangers where water is utilized as refrigerant, that is: enters in the condenser as steam and condenses and it is evaporated in the evaporator (enters as water and becomes steam).

Question: can anybody of you suggest me some correlations to utilize for convective coefficient in these two phases for this refrigerant ?
Has anybody of you any experience with water utilized as refrigerant ?

Many thanks

 

[chicopee]

check heat transfer references for convective heat transfer coefficients. There are a lot of published numbers for different water, saturated and superheated phases under different flow conditions.

 

[quark]

Has anybody of you any experience with water utilized as refrigerant ?

Yup, that is what they do in LiBr+Water vapor absorption systems.