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Home »Methods» Archive for   »  Heating, Ventilation, Air Conditioning/VVS (Page 4)

Category: Heating, Ventilation, Air Conditioning/VVS

Thermal anemometers low velocities: Frequency response and time-constant or cut-off frequency (NT VVS 089)

Posted onFebruary 21, 1991September 21, 2020Author

Report #: NT VVS 089 Approved: February 1991 Size: 337.50 KB Abstract   This method is to be used for the determination of the frequency Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagsanemometers, test methods

Exhaust air heat pumps: Performancea (NT VVS 086)

Posted onSeptember 21, 1990September 21, 2020Author

Report #: NT VVS 086 Approved: September 1990 Size: 326.45 KB Abstract   This method describes the procedure used for testing large exhaust air heat Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagsexhaust air heat pumps, performance, test methods

Large heat meters: In situ calibration (NT VVS 087)

Posted onSeptember 21, 1990September 21, 2020Author

Report #: NT VVS 087 Approved: September 1990 Size: 273.54 KB Abstract   This NORDTEST method is designed for on-site calibration of heat meters (in situ Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, Methods

Buildings: Large scale kitchen range hoods – hood efficiency and pressure drop (NT VVS 088)

Posted onSeptember 21, 1990September 21, 2020Author

Report #: NT VVS 088 Approved: September 1990 Size: 78.00 KB Abstract   This test provides a method of measuring hood efficiency and pressure drop Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagshood efficiency, large scale kitchen range hoods, pressure drop, test methods, tracer gas

Mixing valves, pressure and thermostatic balanced: Stability of water flow and water temperature (NT VVS 079)

Posted onJune 21, 1990September 21, 2020Author

Report #: NT VVS 079 Approved: June 1990 Size: 50.84 KB Abstract   This method is to be used for testing the ability of automatic Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagsmixing valves, test methods, water flow, water temperature

Pre-insulated bonded pipe units: Thermal transmlttance measurements (NT VVS 080)

Posted onJune 21, 1990September 21, 2020Author

Report #: NT VVS 080 Approved: June 1990 Size: 41.00 KB Abstract   This Nordtest method is a laboratory test method for the determination of Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagspipe units, test methods, thermal transmittance

Gullies – roof drainage: Syphonic systems, discharge characteristics (NT VVS 081)

Posted onJune 21, 1990September 21, 2020Author

Report #: NT VVS 081 Approved: June 1990 Size: 107.40 KB Abstract   This NORDTEST method specifies a procedure to determine the capacity and the Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagsroof drainage, test methods

Liquid flow metering installations: Radioactive tracer transit time method, in situ calibration (NT VVS 082)

Posted onJune 21, 1990September 21, 2020Author

Report #: NT VVS 082 Approved: June 1990 Size: 109.86 KB Abstract   This document specifies the method for in situ calibration of liquid flow Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagscalibration, flow metering, test methods

Three-way control valves for hot water systems: Flow characteristics of the valve used as mixing valve (NT VVS 084)

Posted onJune 21, 1990September 21, 2020Author

Report #: NT VVS 084 Approved: June 1990 Size: 468.95 KB Abstract   This method is to be used for testing the hydraulic properties of Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagshot water system, test methods, three-way control valves

Heat meters: Combined or complete instrument,performance test (NT VVS 085)

Posted onJune 21, 1990September 21, 2020Author

Report #: NT VVS 085 Approved: June 1990 Size: 312.58 KB Abstract   This NORDTEST method is designed for evaluating heat meters for the purpose Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, Methods

Pipe insulation: Thermal transmittance (NT VVS 077)

Posted onFebruary 21, 1990September 21, 2020Author

Report #: NT VVS 077 Approved: February 1990 Size: 27.97 KB Abstract   This Nordtest method is a laboratory test method for the determination of Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagspipe insulation, test methods, thermal transmittance

Total ventilation air flow rate: Continous measurement – constant flow technique (NT VVS 074)

Posted onMay 21, 1989September 21, 2020Author

Report #: NT VVS 074 Approved: May 1989 Size: 85.00 KB Abstract   The scope of the method is to determine the total inflow of Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagsair flow, constant flow technique, continous measurement, test methods

Domestic wastewater treatment – septic tank: Sludge separation, storage capacity (NT VVS 075)

Posted onMay 21, 1989September 21, 2020Author

Report #: NT VVS 075 Approved: May 1989 Size: 69.05 KB Abstract   This NORDTEST-method describes tests of sludge separation and sludge storage capacity for Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagsseptic tank, sludge separation, test methods, wastewater treatment

Large heat pumps: Field testing and presentation of performance (NT VVS 076)

Posted onMay 21, 1989September 21, 2020Author

Report #: NT VVS 076 Approved: May 1989 Size: 493.38 KB Abstract   This Nordtest method is intended to be used in the presentation and Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, MethodsTagsheat pump, performance, test methods

Sanitary fittings: Overflow (NT VVS 072)

Posted onNovember 21, 1988September 21, 2020Author

Report #: NT VVS 072 Approved: November 1988 Size: 37.30 KB Abstract   The test method may be used for all types of sanitary fittings Read more…

CategoriesHeating, Ventilation, Air Conditioning/VVS, Methods

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