Kanalinis vandens šildytuvas NKV 250-4, 19 kW, 4 eilės

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Prekė: Kanalinis vandens šildytuvas NKV 250-4, 19 kW, 4 eilės. Kategorija: Oro šildytuvai.

• Gamintojas: Vents
• Modelis: NKV250-4 fi 250 mm - 4 rzędowa

Maximum power 19kW, number of pipe rows: 4.

TECHNICAL DATA:

• made of galvanized steel,
• number of pipe rows: 4,
• connection diameter Ø250,
• for supply ventilation systems,
• for heating or heating the air in ventilation duct systems,
• for connection with round channels,
• heating elements made of copper pipes with aluminum ribs,
• permissible operating pressure of 1.6 MPa (16 bar) at a water temperature of 100°C,
• optionally possible connection of a freezing protection sensor (G 1/4").

DESCRIPTION

Duct water heaters designed to heat supply air in ventilation systems with round cross-sections.

A - Air temperature after using the heater

B - Speed of air flowing through the heater

C - Efficiency of air flowing through the heater

D - External air temperature

E - Efficiency of water flowing through the heater

F - Water pressure drop

G - Heater power

Example of calculating water parameters of a heater:

For a capacity of 1000 m3/h, the air velocity in the heater section is 3,4 m/s (1).

To find the temperature to which air heating is possible, it is necessary from the intersection of performance (1) with the calculation line of winter temperature (falling blue line e.g. -20ºC) run a left line (2) to the intersection with a drop in water temperature (e.g. 70/50) and guide perpendicular from the air temperature axis after passing through the heater (28ºC) (3).

Therefore, to determine the power of the heater you need from the intersection of performance (1) with the calculation line of winter temperature (rising red line e.g. -20ºC) run a line (4) to the right to cut with a drop in water temperature (e.g. 70/50) and guide perpendicular to the power axis of the heater (19,0 kW) (5).

To determine the necessary performance of the heater, you need to leave the perpendicular (6) per line of water flowing through the heater (0,23 l/s).

To determine the drop in water pressure in the heater, it is necessary to find the intersection point of the line (6) with the pressure loss chart and carry out to the right perpendicular (7) on the axis of water pressure drop (17,0 kPa).

Connection in the opposite direction to the air stream.

Connecting in the same direction as the air stream.

DIMENSIONS

• ØD - 248mm
• B- 470mm
• H - 350mm
• H3 - 270mm
• L - 350mm
• L1 - 28mm
• L2 - 65mm
• L3 - 270mm
• K - G 1''

Specifications