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Products | Thermodynamics, Heating and Sanitary Systems | Applied Thermodynamics | WL 312

WL 312

Multipurpose Air Duct and Heat Transfer Unit

Technical Description

The unit comprises an insulated duct through which air is drawn with the aid of a fan. The airflow generated is homogeneous due to a specially shaped inlet area. Different heat exchanger elements can be inserted in the duct: WL 312.01 Plain Tubes, WL 312.02 Finned Tubes, WL 312.03 Direct Expansion Coil.
Velocity distributions and pressure loss are measured with a Pitot tube and an inclined tube manometer. Temperature and humidity sensors are included.
The following accessories are recommended for supplying the heat exchanger:
WL 312.10 Hot Water Bench, WL 312.11 Cold Water Bench, WL 312.12 Condensing Unit.

Learning Objectives / Experiments

Experiments without accessories:
- Recording the fan characteristic curve
- Velocity distribution in the duct

Experiments with accessories:
- Measurement of pressure loss along the duct
(HM 225.01)
- Heat exchange at plain tubes (WL 312.01, together
with WL 312.10 / WL 312.11)
- Heat exchange at finned tubes (WL 312.02, together
with WL 312.10 / WL 312.11)
- Heat exchange at a direct expansion coil
(WL 312.03, together with WL 312.12)

Features

* Experiments on the exchange of heat in airflows
* Flexible basic unit
* Comprehensive range of accessories

Available accessories

WL 312.01 -- Heat Exchanger Element Plain Tubes
WL 312.02 -- Heat Exchanger Element Finned Tubes
WL 312.03 -- Heat Exchanger Element Direct Expansion Coil
WL 312.10 -- Hot Water Bench
WL 312.11 -- Cold Water Bench
WL 312.12 -- Condensing Unit

Alternative products

WL 314 -- Heat Transfer Bench

Specification

[1] Air duct for the investigation of the exchange of heat in airflows
[2] Use of different heat exchangers in the air duct
[3] Insulated air duct, cross-section 150x290mm, length without inlet and effusor approx. 1400mm
[4] Radial fan airflow adjustable
[5] Pitot tube with inclined tube manometer to measure velocitiy distribution and pressure loss
[6] Electronic sensors: pressure transmitter, combined temperature/humidity sensor
[7] Switch box with digital displays
[8] 230V, ~50Hz

Technical Data

Air duct cross-section: wxh 150x290mm
Fan, 900W: max. flow rate: 1680m³/h, max. pressure difference 1000Pa, nominal speed: 2840rpm
Pitot tube: travel 300mm
Inclined tube manometer: 0...100Pa
Sensor measuring ranges:
2x temperature: 0...50°C
2x humidity: 100% rel. humidity
2x pressure: 0...10mbar

Dimensions and Weight

l x w x h : 2310 x 750 x 1800 mm
Weight : approx. 150 kg

Connections

230V, ~50Hz

Scope of Delivery

Experimental set-up, complete, 1 instruction manual

Order Details

060.31200 WL 312 Multipurpose Air Duct and
Heat Transfer Unit