The water quantity used in chilled water systems is usually considerably higher than that used for heating because the unit coils work on smaller temperature differentials in the cooling mode than in the heating mode.
Chilled water coil piping diagram.
Two pipe originated 50 or 60 years ago as a cost effective way to add air conditioning.
Glycol system diagram for single pre heat coil.
Four pipe fan coil unit piping diagram.
The 1 pipe system is poorly suited to chilled water distribution for several reasons.
Circuiting a chilled water coil is one of life s great challenges in the coil business.
Single 2 way chilled water coil piping detail with 2 way control valve.
System flow below chiller min flow 250 gpm variable primary flow at 25 system load two way valves control capacity by varying flow of water in coils per chiller system load 50 tons 176kw 50tons 176 kw primary bypass flow 250 gpm 95 l s 150 gpm 9 5 l s delta t 12 of 6 7 oc 100 gpm 44 ºf 6 3 l s 6 7 ºc 56 ºf 13 3 ºc 150.
Po box 55 cheswick pa 15024 phone 724 274 5430 fax 724 274 5448.
A 2 pipe hvac system is one that uses the same piping alternately for hot water heating and chilled water cooling as opposed to a 4 pipe system that uses separate lines for hot and chilled water.
Design requirements 2 1 the design documents shall include a flow diagram of the hydronic system indicating all.
Hanger supports from wall.
Single 3 way water coil piping detail with 3 way control valve.
While not the most exciting of subjects the necessity of circuiting chilled water coils can not be overstated.
1 1 this section applies to piping systems specialties for hot water heating chilled water cooling condenser water make up water for these systems condensate drain piping or any other hvac water and or glycol piping system.
In this article we l be covering chilled and condenser water schematics to learn how to read them how to identify the main components and symbols as well as real world examples additionally we ll cover the purpose of the main components and different design types.
You re bound to run across folks with years of experience in the industry that can not effectively explain this concept.
Chilled water schematic and condenser water schematics.