Heating
Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more
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Air Heating Systems
Using air to heat buildings - temperature rise diagram
Building Elements - Heat Loss and Thermal Resistivity
Thermal resistance in common building elements as walls, floors and roofs above and below the ground
Calculating Expansion Tanks
Calculating expansion volume in open, closed and diaphragm expansion tanks
Chimneys and Fireplace Sizing
Chimneys and fireplace sizing for fireplaces and stoves burning wood or coal as fuel
Circulating Force in Gravity Heating Systems
Differential pressure due to difference in density between hot and cold water is the circulating force in a self circulating heating system
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 ASME Boiler and Pressure Vessel Code
Classifications of Hot-Water Heating Systems
Hot-water heating systems can be classified by temperature and pressure
Closed Expansion Tank Sizing
Low temperature closed expansion tank sizing
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Condensation on Glass Surfaces
Ouside temperature, inside air condition and condensation on inside glass windows
Convective Air Flow from a Heat Source
Calculate the vertical air flow and air velocity generated by a heat source
Convective Heat - Air Velocity and Volume of Air Flow
A hot or cold vertical surface will generate a vertical airflow - calculate air velocity and volume of the air flow
Diaphragm Expansion Tank Sizing
Low temperature diaphragm expansion tank sizing - tank volume and acceptance volume
Dowtherm A
Physical properties of Dowtherm A
Equivalent Pipe Length Method - Calculating Pressure Loss in Piping Systems
Calculating pressure loss in piping systems with the Equivalent Pipe Length Method
Fittings and Minor Pressure Loss
Minor pressure loss for fittings in piping heating systems
Flow Rates in Heating Systems
Calculating flow rates in heating systems
Flow Temperatures in Hot-Water Heating Systems
Seasonal effects on flow temperatures in hot-water heating systems
Food and Foodstuff - Specific Heat Capacities
Specific heat capacity of some common food and foodstuff as apples, bass, beef, pork and much more
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Greenhouse - Heat Required to Maintain Temperature
Heat required to maintain greenhouse temperature
Greenhouse Temperatures
Customary temperatures for greenhouses
HVAC Diagram - online drawing
Online HVAC diagram drawing
Heat Carrying Capacity of Copper Tube
Hot water heat carrying capacity of copper tube type L
Heat Emission from Pipes Submerged in Oil or Fat
Heat emission from steam or water heating pipes submerged in oil or fat - assisted (forced) and natural circulation
Heat Emission from Pipes Submerged in Water
Heat transmission from steam or water heating pipes submerged in water - assisted (forced) and natural circulation
Heat Emission from Pipes in Greenhouses
Steam and hot water pipes radiation
Heat Emission from Radiators
Calculating heat emission from new and existing column and panel radiators
Heat Emission from Radiators and Heating Panels
Heat emission from radiators and heating panels depends on inlet, outlet and surrounding temperatures
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 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 through Building Elements due to Transmission
Heat loss through common building elements due to transmission, R-values and U-values - imperial and SI units
Heat Pumps Performance and Efficiency Ratings
Rating performance and efficiency of heat pumps
Heat Sources and Convective Air Flows
Convective air flows from some common heat sources - people, computers, radiators and more
Heat, Work and Energy
Tutorial to heat, work and energy - essentials as specific heat and specific heat capacity
Heating Systems - Steel Pipe Pressure Loss Diagram
Steel pipes and tubes - pressure loss diagram hot water heating systems
Hot Water Heating Systems - a Design Procedure
A hot water heating system design procedure - heat loss, boiler rating, heater units and more
Hot Water Heating Systems Design
An introduction to Gravity Heating Systems and Forced Heating Systems
Hot-Water Generators - Water Circulation Rates
Hot water circulation through boilers - Imperial and SI-units
Indoor Design Conditions - 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
Infiltration - Heat Loss from Buildings
Estimated heat loss from building by infiltration
Lights - Installed Power
Installed light power in some common types of buildings and rooms
Outdoor Temperature - and Hot Water Heating Temperature
Adapting the hot water heating temperature to outdoor temperature allows modulating valves to operate in their design range
Outdoor Temperature and Relative Humidity - US Winter and Summer Conditions
Outdoor design temperature and relative humidity in US states and cities - summer and winter
Outdoor to Indoor Temperature Rise and Relative Humidity
The relationship between outdoor and indoor temperature rise - and the effect on the relative humidity
Overall Heat Transfer Coefficients for some common 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 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 and Relief Capacity
Maximum safety valves free air relief capacity
Safety Valves in Heating Systems
Boilers 275 to 1500 kW and Safety Valves
Sizing Swimming Pool Heaters
Calculating outdoor swimming pool heaters
Snow Melting Systems
Sizing water antifreeze snow melting systems
Static Pressures in HVAC Systems
Static pressures in HVAC system avoids the tops of the systems drying out
Thermal Expansion - Volumetric or Cubic
Cubical expansion when changing temperature - online calculator
Units of Heat - BTU, Calorie and Joule
The most common units of heat are BTU - British Thermal Unit, Calorie and Joule
Wood and Combustion Heat Values
Firewood and combustion heat values - Pine, Elm, Hickory and many more species
