Convert Kilocalories per Hour-Square Meter-Celsius to Watts per Square Meter-Kelvin
Instantly convert Kilocalories per Hour-Square Meter-Celsius (kcal/(hr·m²·°C)) to Watts per Square Meter-Kelvin (W/(m²·K)) with our free online calculator.
Formula: kcal/(hr·m²·°C) to W/(m²·K) — multiply by 1.163
Reference Table
| Kilocalories per Hour-Square Meter-Celsius (kcal/(hr·m²·°C)) | Watts per Square Meter-Kelvin (W/(m²·K)) |
|---|---|
| 1 | 1.163 |
| 5 | 5.815 |
| 10 | 11.63 |
| 25 | 29.075 |
| 50 | 58.15 |
| 100 | 116.3 |
How to Convert Kilocalories per Hour-Square Meter-Celsius to Watts per Square Meter-Kelvin
Formula
To convert Kilocalories per Hour-Square Meter-Celsius (kcal/(hr·m²·°C)) to Watts per Square Meter-Kelvin (W/(m²·K)): multiply by 1.163
Step-by-Step
- Start with your value in Kilocalories per Hour-Square Meter-Celsius (kcal/(hr·m²·°C)).
- Multiply by 1.163 to perform the conversion.
- The result is your value expressed in Watts per Square Meter-Kelvin (W/(m²·K)).
Conversion Factor
1 kcal/(hr·m²·°C) = 1.163 W/(m²·K)
Reverse Factor
1 W/(m²·K) = 0.859845 kcal/(hr·m²·°C)
Worked Example
Convert 25 Kilocalories per Hour-Square Meter-Celsius to Watts per Square Meter-Kelvin: 25 kcal/(hr·m²·°C) = 29.075 W/(m²·K)
About Kilocalorie per Hour-Square Meter-Celsius (kcal/(hr·m²·°C))
A legacy metric unit of heat-transfer coefficient equal to exactly 1.163 W/(m²·K). Persists in identifiable contexts: older European engineering literature (especially German DIN-era HVAC handbooks from pre-1980 e.g. Recknagel-Sprenger; French ASHRAE-equivalent French Fluides handbook; Italian process-plant documentation from the 1960s-80s), Russian / Soviet thermodynamic and heat-exchanger documentation that retained metric-calorie units into the post-Soviet transition period, and some older industrial heat-exchanger nameplates still in service in European chemical and refinery facilities (especially East German VEB-era equipment). Numerically convenient because typical convective h values fall in 1-1,000 kcal/(hr·m²·°C) range — a clean three-significant-figure span. Convert kcal/(hr·m²·°C) to W/(m²·K) by multiplying by 1.163; to BTU/(hr·ft²·°F) by multiplying by 0.2048. The unit is officially deprecated under ISO 80000 in favor of W/(m²·K), but remains useful for interpreting and modernizing legacy European technical documentation.
About Watt per Square Meter-Kelvin (W/(m²·K))
The SI unit of convective heat-transfer coefficient h (ISO 80000-5 §5-11) — the constant of proportionality between surface heat flux and the fluid-to-surface temperature difference in Newton's law of cooling (q = h·ΔT). W/(m²·K) is the universal working unit in heat-exchanger thermal design (shell-and-tube per TEMA standards, plate-frame per ALPEMA, brazed-aluminum-plate-fin per ALPEMA), HVAC system design (per ASHRAE Handbook fundamentals chapters), boiler and condenser sizing per ASME Section VIII, refrigeration evaporator and condenser design, and electronics-cooling thermal analysis. Reference values from Incropera-DeWitt 'Fundamentals of Heat and Mass Transfer' Table 1.1: natural convection in air 2-25 W/(m²·K) (dominant resistance in building envelopes); forced-convection air 25-250 W/(m²·K) (HVAC ducts, cooling fans); natural convection water 50-1,000 W/(m²·K); forced-convection water 100-20,000 W/(m²·K); boiling water 2,500-100,000 W/(m²·K) (nucleate-boiling regime, with critical heat flux at ~1 MW/m²); filmwise condensation 5,000-15,000 W/(m²·K); dropwise condensation 30,000-150,000 W/(m²·K) — 10× higher than filmwise, exploited in advanced condenser surface treatments. Also called the 'film coefficient' in older HVAC literature.
Quick Facts
- 1 Kilocalorie per Hour-Square Meter-Celsius equals 1.163 Watts per Square Meter-Kelvin
- 1 Watt per Square Meter-Kelvin equals 0.859845 Kilocalories per Hour-Square Meter-Celsius
- Kilocalorie per Hour-Square Meter-Celsius is a unit of heat transfer coefficient
- Watt per Square Meter-Kelvin is a unit of heat transfer coefficient
- This conversion is commonly used in heat exchanger design, HVAC engineering, and process optimization
- The Kilocalorie per Hour-Square Meter-Celsius belongs to the metric system
Common Kilocalorie per Hour-Square Meter-Celsius to Watt per Square Meter-Kelvin Conversions
| Kilocalories per Hour-Square Meter-Celsius (kcal/(hr·m²·°C)) | Watts per Square Meter-Kelvin (W/(m²·K)) |
|---|---|
| 0.01 | 0.01163 |
| 0.1 | 0.1163 |
| 0.25 | 0.29075 |
| 0.5 | 0.5815 |
| 1 | 1.163 |
| 2 | 2.326 |
| 3 | 3.489 |
| 5 | 5.815 |
| 10 | 11.63 |
| 15 | 17.445 |
| 20 | 23.26 |
| 25 | 29.075 |
| 50 | 58.15 |
| 75 | 87.225 |
| 100 | 116.3 |
| 250 | 290.75 |
| 500 | 581.5 |
| 1000 | 1163 |
| 5000 | 5815 |
| 10000 | 11630 |
Understanding Kilocalories per Hour-Square Meter-Celsius
The Kilocalorie per Hour-Square Meter-Celsius (symbol: kcal/(hr·m²·°C)) is a unit of heat transfer coefficient. A legacy metric unit of heat-transfer coefficient equal to exactly 1.163 W/(m²·K). Persists in identifiable contexts: older European engineering literature (especially German DIN-era HVAC handbooks from pre-1980 e.g. Recknagel-Sprenger; French ASHRAE-equivalent French Fluides handbook; Italian process-plant documentation from the 1960s-80s), Russian / Soviet thermodynamic and heat-exchanger documentation that retained metric-calorie units into the post-Soviet transition period, and some older industrial heat-exchanger nameplates still in service in European chemical and refinery facilities (especially East German VEB-era equipment). Numerically convenient because typical convective h values fall in 1-1,000 kcal/(hr·m²·°C) range — a clean three-significant-figure span. Convert kcal/(hr·m²·°C) to W/(m²·K) by multiplying by 1.163; to BTU/(hr·ft²·°F) by multiplying by 0.2048. The unit is officially deprecated under ISO 80000 in favor of W/(m²·K), but remains useful for interpreting and modernizing legacy European technical documentation.
It belongs to the metric measurement system.
Kilocalories per Hour-Square Meter-Celsius are commonly used in heat exchanger design, HVAC engineering, and process optimization.
Understanding Watts per Square Meter-Kelvin
The Watt per Square Meter-Kelvin (symbol: W/(m²·K)) is a unit of heat transfer coefficient. The SI unit of convective heat-transfer coefficient h (ISO 80000-5 §5-11) — the constant of proportionality between surface heat flux and the fluid-to-surface temperature difference in Newton's law of cooling (q = h·ΔT). W/(m²·K) is the universal working unit in heat-exchanger thermal design (shell-and-tube per TEMA standards, plate-frame per ALPEMA, brazed-aluminum-plate-fin per ALPEMA), HVAC system design (per ASHRAE Handbook fundamentals chapters), boiler and condenser sizing per ASME Section VIII, refrigeration evaporator and condenser design, and electronics-cooling thermal analysis. Reference values from Incropera-DeWitt 'Fundamentals of Heat and Mass Transfer' Table 1.1: natural convection in air 2-25 W/(m²·K) (dominant resistance in building envelopes); forced-convection air 25-250 W/(m²·K) (HVAC ducts, cooling fans); natural convection water 50-1,000 W/(m²·K); forced-convection water 100-20,000 W/(m²·K); boiling water 2,500-100,000 W/(m²·K) (nucleate-boiling regime, with critical heat flux at ~1 MW/m²); filmwise condensation 5,000-15,000 W/(m²·K); dropwise condensation 30,000-150,000 W/(m²·K) — 10× higher than filmwise, exploited in advanced condenser surface treatments. Also called the 'film coefficient' in older HVAC literature.
It belongs to the metric measurement system.
Watts per Square Meter-Kelvin are commonly used in heat exchanger design, HVAC engineering, and process optimization.
Why Convert Kilocalories per Hour-Square Meter-Celsius to Watts per Square Meter-Kelvin?
Converting between Kilocalories per Hour-Square Meter-Celsius and Watts per Square Meter-Kelvin is a frequent requirement for engineers, scientists, and students working with heat transfer coefficient values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate heat transfer coefficient conversion is essential.
Frequently Asked Questions
How do I convert Kilocalories per Hour-Square Meter-Celsius to Watts per Square Meter-Kelvin?
A legacy metric unit of heat-transfer coefficient equal to exactly 1. To convert Kilocalories per Hour-Square Meter-Celsius to Watts per Square Meter-Kelvin, multiply by 1.163. For example, 25 kcal/(hr·m²·°C) equals 29.075 W/(m²·K).
How many Watts per Square Meter-Kelvin are in 1 Kilocalorie per Hour-Square Meter-Celsius?
There are 1.163 Watts per Square Meter-Kelvin in 1 Kilocalorie per Hour-Square Meter-Celsius.
How many Kilocalories per Hour-Square Meter-Celsius are in 1 Watt per Square Meter-Kelvin?
There are 0.859845 Kilocalories per Hour-Square Meter-Celsius in 1 Watt per Square Meter-Kelvin.
What is the formula for Kilocalorie per Hour-Square Meter-Celsius to Watt per Square Meter-Kelvin conversion?
The formula is: multiply by 1.163. This means 1 kcal/(hr·m²·°C) = 1.163 W/(m²·K).
Is a Kilocalorie per Hour-Square Meter-Celsius bigger than a Watt per Square Meter-Kelvin?
No. One Kilocalorie per Hour-Square Meter-Celsius is smaller than one Watt per Square Meter-Kelvin because 1 kcal/(hr·m²·°C) equals 1.163 W/(m²·K), which is greater than 1.
When do you need to convert between Kilocalories per Hour-Square Meter-Celsius and Watts per Square Meter-Kelvin?
The SI unit of convective heat-transfer coefficient h (ISO 80000-5 §5-11) — the constant of proportionality between surface heat flux and the fluid-to-surface temperature difference in Newton's law of cooling (q = h·ΔT). Kilocalorie per Hour-Square Meter-Celsius and Watt per Square Meter-Kelvin are both heat transfer coeff units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.