Pump Evaporator
Pump Evaporator
(OP)
Hello,
I don't want to make you an odd question but I am facing to the concept of pump evaporator.
I'd like to understand a little more concerning the way of working of the system.
In detail, I would understand how to determine the enthalpic way to determine the capacity.
I would suppose that the enthalpic difference would be given from
(h out - h in)
where h out = latent/feed rate
my question would be:
obviously
capacity = mass flow * enthalpy difference
the question - hope not odd - is
is the mass flow equal feed rate times the standard mass flow it would have with a DX system ?
Many thanks
I don't want to make you an odd question but I am facing to the concept of pump evaporator.
I'd like to understand a little more concerning the way of working of the system.
In detail, I would understand how to determine the enthalpic way to determine the capacity.
I would suppose that the enthalpic difference would be given from
(h out - h in)
where h out = latent/feed rate
my question would be:
obviously
capacity = mass flow * enthalpy difference
the question - hope not odd - is
is the mass flow equal feed rate times the standard mass flow it would have with a DX system ?
Many thanks





RE: Pump Evaporator
I'm pretty good with English and I have no idea what the question is.
RE: Pump Evaporator
RE: Pump Evaporator
Where the cooling rate is equal to the amount of water evaporated per hour?
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: Pump Evaporator
Mass flow is mass flow. Don't times with anything.
RE: Pump Evaporator
Still think there is a language problem.
RE: Pump Evaporator
First of all my sincere apologizes for not being clear.
I thank all the people who answered.
Mr MintJulep, you are correct I meant a flooded evaporator.
The question I would like to understand is:
which is the correct way to calculate the performance of a flooded evaporator given the evaporating temperatures, secondary fluid inlet temperature and fluid flow ?
Apologizes for not being clear
RE: Pump Evaporator
Refrigerant - m1×ΔH, m1 is mass flowrate of the refrigerant, ΔH is the enthalpy difference of the refrigerant (closely, it is latent heat)
Water - m2×Cp×ΔT, m2 is mass flowrate of water, Cp is specific heat and ΔT is temperature difference (in-out)
PS: Use consistent set of units.