Heat Radiation Countermeasures - Mitsubishi Electric M800VW Series Connection And Set Up Manual

Hide thumbs Also See for M800VW Series:

Table of Contents

M800VW/M80VW Series Connection and Setup Manual

5 Installation

5.1 Heat Radiation Countermeasures

Please refer to the following method for heat radiation countermeasures.

Example of heat radiation countermeasures

 Hypothetical conditions

 Average internal temperature of operation panel: T ≤ 58 °C

 Peripheral temperature of operation panel: Ta ≤ 0 °C to 45 °C

 Internal temperature rise value: ΔT = T - Ta (max) = 13 °C

[Procedures for heat design and verification]

Calculate total heat radiation of each

mounted unit (W)

Calculate cooling capacity of

operation panel (W1)

Comparison of W and W1

Selection of heat exchanger

Mounting design

Collection of internal temperature rise

distribution data

Improvements

[Supporting description]

 Refer to "4 General Specifications" for the heat generated by each unit.

 Enclosed cabinet (thin steel plate) cooling capacity calculation equation

W1 = U × A × ΔT

A: Effective heat radiation area (m

ΔT: Internal temperature rise value (13 °C)

°C can be applied only when the operation panel is so small that the internal temperature stays uniform.

 Points of caution for heat radiation countermeasures when designing mounting state

- Consider convection in operation panel (eliminate heat spots)

- Collect hot air at suction port of heat exchanger in operation panel

 Criterion for internal temperature rise distribution data

ΔT (average) ≦ 13 °C

ΔTmax (maximum value) ≤ 15 °C

R (inconsistent ΔTmax - ΔTmin) ≤ 6 °C

(Checking for hot spots)

IB-1501612-C

) (Area where heat can be radiated from operation panel