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

Heating

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

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Air Heating Systems

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

ASME - International Boiler and Pressure Vessel Code

The International Boiler and Pressure Vessel Code safety rules governing design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction.

Boilers - Classification

Classification of boilers according the ASME Boiler and Pressure Vessel Code.

Building Elements - Heat Loss vs. Thermal Resistivity

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

Chimneys and Fireplace Sizing

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

Closed Expansion Tanks - Volume vs. Temperature and Pressure

Sizing of low temperature closed expansion tanks.

Coal - Classification

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

Convective Air Flow - Single Heat Source

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

Convective Air Flows from Typical Heat Sources

Convective air flows from typical heat sources like people, computers, radiators and more.

Convective Heat Transmission - Air Velocity and Air Flow Volume

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

Copper Tubes - Heat Carrying Capacities

Hot water heat carrying capacities for copper tubes type L.

Design of Hot Water Heating Systems

Calculate gravity and forced circulating hot water heating systems.

Diaphragm Expansion Tanks

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

District Heating - Temperature vs. Heat Capacity

Water temperature and heating capacity.

Dowtherm A

Physical properties of Dowtherm A.

Equivalent Length Method - Minor Pressure Loss in Piping Systems

Calculate minor pressure loss in piping systems with the Equivalent Pipe Length Method.

Fittings and Minor Pressure Loss

Minor pressure loss with fittings in piping heating systems.

Fluid Heat Transfer Coefficients vs. Heat Exchanger Surface Combinations

Average overall heat transmission coefficients for fluid and surface combinations like Water to Air, Water to Water, Air to Air, Steam to Water and more.

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Food and Foodstuff - Specific Heat

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

Gas Oil - Classification

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

Gravity Heating System

The density difference between hot and cold water is the circulating force in a self circulating gravity heating system.

Greenhouse Pipes - Heat Emission

Heat emission from steam and hot water pipes typical used in greenhouse installations.

Greenhouses - Heat Required to Maintaining Temperature

Heat required to maintain a greenhouse temperature.

Greenhouses - Typical Temperatures

Typical greenhouse temperatures.

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 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 the heat loss from an open water tank like a swimming pool may be considerable.

Heat Pumps - Performance and Efficiency Ratings

Performance and efficiency rating of heat pumps.

Heat, Work and Energy

Heat vs. work vs. energy.

Heating System Flow Rates

Calculate flow rates in heating systems.

Heating Systems - Size of Safety Valves vs. Boiler Power

Safety valves with boilers ranging 275 to 1500 kW.

Hot Water Boiler - Circulation Rates

Boiler power and water flow - Imperial and SI-units.

Hot Water Expansion Tanks - Sizing

Required hot water expansion volume in open, closed and diaphragm tanks.

Hot Water Heating System - Design Procedure

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

Hot Water Heating System Temperatures vs. Outdoor Temperatures

Hot water heating temperatures adapts to outdoor temperatures.

Hot Water Heating Systems - Flow Temperatures vs. Outside Temperatures

Seasonal effects on hot-water heating systems flow temperatures.

Hot Water Heating Systems - Online Design Application

Free online design tool for designing hot water heating systems - metric units.

Hot Water Heating Systems - Online Design Application, Imperial Units

Online design tool for hot water heating systems.

Hot Water Heating Systems - Pressure Loss in Steel Pipes

Pressure loss nomogram for steel pipes in hot water heating systems.

Hot Water Systems - Equivalent Length vs. Fittings Resistance

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

Hot-Water Heating Systems - Classification

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

HVAC Diagram - Online Drawing Tool

Draw HVAC diagrams online with this Google Drive drawing tool.

Indoor Design Temperatures

Recommended indoor temperatures in summer or winter.

Indoor Relative Humidity vs. Outdoor Relative Humidity and Temperature

Recommended indoor relative humidity vs. outdoor relative humidity and temperature.

Industrial Product and Production Processes - Climate Conditions

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

Infiltration - Heat Losses from Buildings

Estimated infiltration heat losses from buildings.

Lights vs. Power Installation

Lights vs. power installations in common types of buildings and rooms.

Oil Filled Tanks - Heat Loss

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

Outdoor Temperatures and Relative Humidity - US Winter and Summer Conditions

Outdoor summer and winter design temperatures and relative humidity for US states and cities.

Pipes Submerged in Oil or Fat - Heat Emission

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

Pipes Submerged in Water - Heat Emission

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

Radiators - Heat Emission

Calculate heat emission from column and panel radiators.

Safety Relief Valve Capacities

Maximum safety valve free air relief capacity.

Safety Valve Standards

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

Snow Melting Systems

Sizing snow melting systems - water and antifreeze.

Standard enthalpy of formation, Gibbs energy of formation, entropy and molar heat capacity of organic substances

The standard enthalpy of formation, Gibbs energy of formation, entropy and molar heat capacity are tabulated for more than hundred organic substances.

Static Pressure in a HVAC System

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

Steam Radiators and Convectors - Heating Capacities

Steam radiators and steam convectors - heating capacities and temperature coefficients.

Swimming Pool Heaters

Calculate outdoor swimming pool heaters.

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 BTU - British Thermal Unit, Calorie and Joule.

Volumetric (Cubic) Thermal Expansion

Volumetric temperature expansion calculator.

Windows - Inside Condensation

Water condensation on inside glass windows surfaces vs. outside temperature and inside temperature and humidity.

Wood - Combustion Heat Values

Combustion of wood and firewood heat values for species like Pine, Elm, Hickory and more.

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3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

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