E
LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA
Chilled beams HDF-us-OM (01/17)
Phone 864 599-6340, Fax -6344 · [email protected] · www.LTG-INC.net
Former editions are invalid · Subject to technical modifications
page 13 of 30
Installation, operating and maintenance instructions
Active chilled beams HDF-600, ceiling installation
4.3
Caloric output data
Caloric output data were determined at a test stand in the
LTG test lab. Data are valid if the following applies:
- unit at operating temperature, steady-state condition
- steady-state condition during measurements
- no condensation at the heat exchanger in the cooling
mode
- water without additives (drinking water quality)*
- water supply temperatures from
54 °F to 61 °F
_
in the cooling mode and
122 °F to 140 °F in the heating mode.
Parameters used:
- specific heat capacity of the water
1.0 BTU/lb °F
- specific heat capacity of the air
0.24 BTU/lb °F
- Air density
0.076 lb/ft
3
To ensure easy transferability, the specific caloric outputs
- i.e. the absolute caloric outputs in relation to the temper
ature difference between water intake and induction air
before entering the heat exchanger - are given.
The outputs given in the chart do apply with specific nomi
nal flow rates only. These are stated for each type and
size.
The correction charts give a graphic illustration of how
outputs change with other flow rates compared to nomi
nal flow rate output.
Flow rates have been determined through calculation and
may vary by about 10%.
*
Addition of ethylene glycol to lower the freezing
point:
To lower the freezing point, cooling water is often
mixed with ethylene glycol. The lower specific thermal ca
pacity of the mixture reduces the unit's cooling capacity.
Summary of Contents for HDF-600
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