Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

This is an AMP page - Open full page! for all features.

• the most efficient way to navigate the Engineering ToolBox!

# Steam Radiators and Convectors - Heating Capacities

The heat capacity of a steam radiator can be expressed as

H r = q s h s λ r (1)

where

H r = heat capacity of radiator (kW, Btu/h)

q s = condensate rate (kg/h, lb/h)

h s = latent heat steam (2675 kJ/kg, 970 Btu/lb)

λ r = radiator temperature correction coefficient = 1 for room temperature 70 o F (21 o C) and steam temperature 215 o F (100 o C).

The radiator correction coefficient for other room and steam temperatures can be calculated

λ r = [( (215 o F) - (70 o F) )/(t s - t r )] 1.3 (1b)

where

t s = average steam temperature ( o F)

t r = room temperature ( o F)

### Steam Heated Convector

The heat capacity of a steam heated convector can be expressed as

H c = q s h s λ c (2)

where

H c = heat capacity of convector (kW, Btu/h)

q s = condensate rate (kg/h, lb/h)

h s = latent heat steam (2675 kJ/kg, 970 Btu/lb)

λ c = convector temperature correction coefficient = 1 for inlet temperature 65 o F (18 o C) and steam temperature 215 o F (100 o C).

The convector correction coefficient for other room and steam temperatures can be calculated

λ = [((215 o F) - (65 o F) )/(t s - t i )] 1.5 (3)

where

t s = steam temperature ( o F)

t i = inlet temperature ( o F)

## Related Topics

### • Heating

Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more.

### • Steam and Condensate

Steam & condensate systems- properties, capacities, pipe sizing, systems configuration and more.

## Related Documents

### Air Heating Systems

Air heating buildings - heat supply vs. air flow and temperature.

### Arithmetic and Logarithmic Mean Temperature Difference

Arithmetic Mean Temperature Difference in Heat Exchangers - AMTD - and Logarithmic Mean Temperature Difference - LMTD - formulas with examples - Online Mean Temperature Calculator.

### Convective Heat Transmission - Air Velocity and Air Flow Volume

Hot or cold vertical surfaces generates vertical air flows - calculate air velocity and volume flow.

### Cooling and Heating Equations

Latent and sensible cooling and heating equations - imperial units.

### Heat Emission from Radiators and Heating Panels

The heat emission from a radiator or a heating panel depends on the temperature difference between the radiator and the surrounding air.

### Heat Loss from Buildings

Overall heat transfer loss from buildings - transmission, ventilation and infiltration.

### Heat Pumps - Performance and Efficiency Ratings

Performance and efficiency rating of heat pumps.

Calculate heat emission from column and panel radiators.

### Steam Heating Processes - Load Calculating

Calculating the amount of steam in non-flow batch and continuous flow heating processes.

### Steam Heating Systems - Design

An introduction to the basic design of steam heating systems.

### Transmission Heat Loss through Building Elements

Heat loss through common building elements due to transmission, R-values and U-values - imperial and SI units.

## Search Engineering ToolBox

• the most efficient way to navigate the Engineering ToolBox!

## SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!