Good question .Thank you . Because a chiller is usually a cooling system the pressurisation unit will work with an inverted value. When the chiller is off the water is worm and the water pressure in to the system is related directly to the water temperature . You must fill the water circuit on chiller with a maximum pressure allowed by the system . Make sure that you are below the PRV set point . The pressure on the chillers water circuit will drop when the chiller will cool the water . We all know that the water shrink until is freezing .When it is freezing the the water volume is increased again but this is just a basic side explanation . The pressurisation should be set to support the water pressure drop when the water is cooling down . The pressure vessel should be carefully chosen to provide the appropriate elasticity for the system . Technically YES The pressurisation work the same but the pressure in to the system will work in opposite to a boiler system as the water is losing the heat when chiller is working so it is obvious that it will loose the pressure . If the system elasticity is not well calculated the pressurisation will compensate the low pressure when chiller is running and the PRV will eliminate the water when the chiller will rest in night time . If the chiller runs continuously and the variation of temperature is zero then the pressure variation will be zero and the pressure vessel will be good only when the chiller will be turned off . Hope that helps . With respect . Mihai John
Dear Sir Pressurisation unit does not require calculation Please look trough my other videos . The heating installation meed calculation And the hight of the installation meed to be considered too
Hi good explanation
Does a pressure vessel on the chilled water side work the same as on the hot side +
Good question .Thank you .
Because a chiller is usually a cooling system the pressurisation unit will work with an inverted value.
When the chiller is off the water is worm and the water pressure in to the system is related directly to the water temperature .
You must fill the water circuit on chiller with a maximum pressure allowed by the system .
Make sure that you are below the PRV set point .
The pressure on the chillers water circuit will drop when the chiller will cool the water . We all know that the water shrink until is freezing .When it is freezing the the water volume is increased again but this is just a basic side explanation .
The pressurisation should be set to support the water pressure drop when the water is cooling down .
The pressure vessel should be carefully chosen to provide the appropriate elasticity for the system .
Technically YES The pressurisation work the same but the pressure in to the system will work in opposite to a boiler system as the water is losing the heat when chiller is working so it is obvious that it will loose the pressure .
If the system elasticity is not well calculated the pressurisation will compensate the low pressure when chiller is running and the PRV will eliminate the water when the chiller will rest in night time .
If the chiller runs continuously and the variation of temperature is zero then the pressure variation will be zero and the pressure vessel will be good only when the chiller will be turned off .
Hope that helps .
With respect .
Mihai John
Hi pls share the calculation of pressurization unit and its selection
Dear Sir
Pressurisation unit does not require calculation
Please look trough my other videos .
The heating installation meed calculation And the hight of the installation meed to be considered too