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

Air Heating Systems

Using air to heat buildings - temperature rise diagram

Building Elements - Heat Loss and Thermal Resistivity

Thermal resistance in common building elements - like walls, floors and roofs above and below the ground

Calculating Water Expansion Tanks

Water expansion volume in open, closed and diaphragm expansion tanks

Chimney and Fireplace Sizing

Chimneys and fireplaces for fireplaces and stoves burning wood or coal as fuel

Classification of Coal

Classification of coal based on volatile matter and cooking power of clean material

Classification of Gas Oil

Classification of gas oil based on BS 2869 - Specification for fuel oils for agricultural, domestic and industrial engines and boilers

Classifications of Boilers

Classification of boilers according the ASME Boiler and Pressure Vessel Code

Classifications of Hot-Water Heating Systems

Hot-water heating systems can be classified by temperature and pressure

Combustion of Wood - Heat Values

Firewood and combustion of wood heat values - for species like Pine, Elm, Hickory and more

Convective Air Flow from a single Heat Source

Calculate the vertical air flow and air velocity generated by a single heat source

Convective Heat Transmission - Air Velocity and Air Flow Volume

A hot or cold vertical surface generates vertical air flow - air velocity and volume flow calculator

Copper Tubes and Heat Carrying Capacities

Hot water heat carrying capacity of copper tubes type L

Design of Hot Water Heating Systems

Gravity and Forced Heating Systems

District Heating - Temperature and Heat Capacity

Water temperature and heating capacity

Dowtherm A

Physical properties of Dowtherm A

Equivalent Length Method - Calculating Minor Pressure Loss in Piping Systems

Pressure loss in piping systems by using the Equivalent Pipe Length Method

Fittings and Minor Pressure Loss

Minor pressure loss for fittings in piping heating systems

Food and Foodstuff - Specific Heat

Specific heat of common food and foodstuff like apples, bass, beef, pork and many more

Gravity Heating Systems

The density difference between hot and cold water is the circulating force in self circulating heating systems

Greenhouse Pipes - Heat Emission

Heat loss from steam and hot water pipes - typical used in greenhouses

Greenhouse Temperatures

Typical greenhouse temperatures

Greenhouses - Heat Required to Maintaining Temperature

Heat required to maintain a greenhouse temperature

HVAC Diagram - Online Drawing

Draw HVAC diagrams - Online with the Google Drive drawing tool

Heat Emission from Pipes Submerged in Oil or Fat

Heat emission from steam or water heating pipes submerged in oil or fat - forced and natural circulation

Heat Emission from Radiators

Calculate heat emission from column and panel radiators

Heat Emission from Radiators and Heating Panels

Heat emission from radiator and heating panels depends on temperature difference between radiator and surrounding air

Heat Loss from Buildings

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

Heat Loss from Oil Filled Tanks

Heat loss from insulated and uninsulated, sheltered and exposed heated oil tanks

Heat Loss from Oil filled Tanks and Pipe Lines

Heat loss from insulated and non insulated sheltered and exposed oil tanks and pipes

Heat Loss from Open Water Tanks

Due to evaporation heat loss from open water tank as a swimming pools may be considerable

Heat Loss from Pipes Submerged in Water

Heat transmission from steam or water heating pipes or tubes submerged in water - assisted (forced) and natural circulation

Heat Pumps - Performance and Efficiency Ratings

Rating the performance and efficiency of heat pumps

Heat Sources and Convective Air Flow

Convective air flow from heat sources - like people, computers, radiators and more

Heat, Work and Energy

Heat, work and energy tutorial - essentials as specific heat

Heating Systems Flow Rates

Calculate heating systems flow rates

Hot Water Boiler Circulation Rates

Boiler power and water flow - Imperial and SI-units

Hot Water Heating System - Design Procedure

Hot water heating system design procedure - heat loss, boiler rating, heater units and more

Hot Water Heating System - Flow Temperature vs. Outside Temperature

Seasonal effects on hot-water heating systems flow temperatures

Indoor Design Conditions for Industrial Products and Production Processes

Recommended indoor temperature and humidity for some common industrial products and production processes

Indoor Design Temperatures

Recommended indoor temperatures summer and winter

Indoor Relative Humidity versus Outdoor Temperature and Relative Humidity

Indoor relative humidity versus outdoor temperature and relative humidity

Infiltration - Heat Loss from Buildings

Estimated infiltration heat loss from buildings

Lights - Installed Power

Light power in common types of buildings and rooms

Outdoor Temperature - and Hot Water Heating Temperatures

Adapting hot water heating temperatures to outdoor temperature allows modulating valves to operate in design range

Outdoor Temperature and Relative Humidity - US Winter and Summer Conditions

Outdoor summer and winter design temperature and relative humidity in US states and cities

Overall Heat Transfer Coefficients for some Combinations of Fluids and Heat Exchanger Surfaces

Average overall heat transmission coefficients for some common fluids and surface combinations as Water to Air, Water to Water, Air to Air, Steam to Water and more

Resistance and Equivalent Length of Fittings

Equivalent length of fittings like bends, returns, tees and valves in hot water heating systems - equivalent length in feet and meter

Safety Relief Valve Capacity

Maximum free air relief capacity of safety valves

Safety Valve Standards

An survey of international safety valve standards. The most common used standards in Germany, UK, USA, France, Japan, Australia and Europe

Safety Valves in Heating Systems

Safety valves with boilers 275 to 1500 kW

Sizing Swimming Pool Heaters

Calculate outdoor swimming pool heaters

Sizing of Closed Expansion Tanks

Sizing of low temperature closed expansion tanks

Sizing of Diaphragm Expansion Tanks

Low temperature diaphragm expansion tank sizing - calculate tank volume and acceptance volume

Snow Melting Systems

Sizing snow melting systems - water and antifreeze

Static Pressure in a HVAC System

A static pressure is required in a HVAC system to keep the water in the highest levels of teh system

Steel Pipes in Heating Systems - Pressure Loss Chart

Steel pipes in hot water heating systems - pressure loss diagram

Transmission Heat Loss through Building Elements

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

Units of Heat - BTU, Calorie and Joule

The most common units of heat are BTU - British Thermal Unit, Calorie and Joule

Volumetric - or Cubic Thermal Expansion

Volumetric temperature expansion with online calculator

Windows - Inside Condensation

Outside temperature, inside humidity and water condensation on the inside of glass windows surfaces

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