HOT WATER GENERATORS
1.) The amount of hot water required (“demand”) in gallons per hour. 2.) The incoming (cold) water temperature. 3.) The outgoing (hot) water temperature. (The difference between 2 & 3) is known as the “Delta T”) 4.) The heating medium supplied in the heat exchanger tubes- Steam or Water. 4a.) If Steam, its pressure after the regulator. 4b.) If pumped Boiler Water, its temperature and GPM if available. 5.) If a single or double wall bundle is required. |
TERMINOLOGY | |||
Agitated: | See Circulated. | ||
Bonnet: | The cap on the outer end of the bundle. | ||
Bundle. | The heat exchanger unit. Aka Tube Bundle. | ||
Circulated: | Hot water is pumped through the tank constantly. | ||
Cogeneration: | Utilizing heat that is a byproduct of another system. | ||
Coil: | The heat exchanger unit. | ||
Collar: | A short pipe that is welded into the tank and houses the bundle. | ||
Delta-T: | The required increase in temperature from cold to hot water. | ||
Double wall: | Tube and tube sheet design that prevents boiler water from contaminating the hot water supply in the event of tube leakage. | ||
Flange: | The part welded to the outer end of the collar that the bundle is bolted to. | ||
Fouling factor: | An allowance that increases the size of the bundle to ensure that demand is met even if the tubes become coated with residues from the water. | ||
Recirculation: | Hot water is pumped throughout the building constantly. If so the tank is defined as circulated or agitated. | ||
Pass: | The number of times the heating medium travels the length of the coil. Two pass is standard. Four or six pass is sometimes necessary. | ||
Tube Sheet: | A circular plate that has the open ends of the tubes installed into it. | ||
Tube support: | A bracket installed in the tank during production to support the bundle. | ||
U-Tube: | The shape of the bundle. The letter “U” laid on its side. |
Due to wide variety of options available, we manufacture all units to meet customers’ exact requirements. Here are some examples:
VERTICAL HOT WATER GENERATORS
HORIZONTAL HOT WATER GENERATORS
Notes:
- All prices are FOB our plant, Los Angeles, California.
- In stock tanks cannot be modified.
- Standard styles can be modified at nominal cost. The part# will change.
- DRAWINGS ARE UPDATED TO CURRENT A.S.M.E. DATE FOR NEW ORDERS. WEIGHTS AND DIMENSIONS ARE APPROXIMATE.
- If the capacity or working pressure you need is not listed, CONTACT US for a prompt quotation.
- TANKS SHIPPED BY TRUCK MUST BE SKIDDED FOR SHIPMENT - CALL FOR PRICING.
- As well as ASME, we can meet other domestic and international codes. EG: ABS, USCG, Canadian, Lloyds and DNV.
- ERRORS AND OMISSIONS EXCEPTED.