Hoval DGV-6/30, Руководство по конструкции

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5 Design example
Notice
Use the 'HK-Select' program to design Hoval Indoor Climate Systems.
You can download it free of charge on the Internet.
Design data Example
■ Geometry of the room
■ Internal heat gains
■ Fabric heat losses
■ Fresh air temperature
■ oom temperature
■ Extract air temperature
■ Comfort requirements (acoustic)
■ People in the room
■ Improvement of air quality, fresh air supply for the people in the room
(fresh air flow rate per person = 30 m³/h)
Geometry ..................................50 × 60 × 12 m
Internal heat gains ....................28 kW
Fabric heat loss .........................350 kW
Fresh air temperature................– 15 °C
Room temperature ....................18 °C
Extract air temperature..............20 °C
Comfort requirements ...............Standard
20 people
Comfort requirements
Define the fan speed in accordance with the acoustic requirements:
■
Low noise level
→
Fan speed 1
■
Normal noise level
→
Fan speed 2
Standard
→
Fan speed 2
Fresh air supply
■ Required fresh air flow rate in total:
■ Fresh air ratio of supply air units: max. 10 % of the nominal air flow rate
The fresh air ratio can be adjusted from 0…100 %. Where EU Regulation 1253/2014
applies, it must be restricted to max. 10 % in the design conditions.
■ Calculate the required number of supply air units from the nominal air flow rate.
20 × 30 = 600 m³/h
MG-6/30: max. 420 m³/h fresh air
MG-6/60: max. 590 m³/h fresh air
MG-9/60: max. 700 m³/h fresh air
→ 1 TopVent ® MG-9/60 unit
Mounting height
■ Calculate the actual mounting height (= distance between the floor and the bottom edge of
the TopVent ® unit).
H = Hall height – distance from ceiling – unit height
■ Compare the actual mounting height with the minimum and maximum mounting height (see
Table E9 and HK-Select).
Supply air units:
Size 6
→
OK
Size 9
→
OK
Recirculation units:
Size 6
→
OK
Size 9
→
OK
Required performance for covering fabric heat losses
■ Required heat output for coverage of fabric heat losses in total
Q
H_req
= Fabric heat losses – internal heat loads
350 – 28 = 322 kW
E
55
TopVent ® MG
Design example Dimensions and weights