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Economic insulation thickness, losses from uninsulated valves and flanges, heat exchanger (LMTD and area), batch tank heating, cooling towers and glycol water.
Calculate heat loss from pipes and surfaces, outer surface temperature and the economic insulation thickness, with payback and NPV.
Heat loss, surface temperature, thicknessCompute heat loss from bare valves, flange pairs and steam traps on steam or hot fluid lines, with areas from ASTM C1129 and ASME B16.5, convection and radiation, equivalent bare pipe length, energy, fuel and annual cost, and the payback of removable insulation jackets.
Heat loss, jackets, paybackPre-size a heat exchanger: heat balance, LMTD, shell-and-tube F factor, fouled U, area, effectiveness and the payback of heat recovery.
LMTD, F factor, area, effectivenessWork out how long a jacketed or coil-heated vessel takes to heat or cool a batch, with condensing steam or a fluid without phase change (hot water, thermal oil, tower or chilled water), using Kern’s equations; see heat, steam use, peak flow, cost per batch and per year and the temperature curve.
Jacket, coil, steam, timeCompute cooling tower range, approach, effectiveness and heat rejected, plus evaporation, drift, blowdown from cycles of concentration, makeup water and annual water cost.
Range, approach, evaporation, cycles, makeupFind the ethylene or propylene glycol concentration for the freeze point you need, with margin, and get density, specific heat and viscosity by temperature, the flow for the same heat load, the capacity loss and the increase in pressure drop and pump power versus plain water.
Freeze point, cp, viscosity, flow, pumpCalculate the flash steam fraction and the fuel, water and treatment savings from more condensate return, with payback and NPV.
Flash fraction, water, fuel, returnCompute moist air properties from dry bulb and relative humidity, wet bulb or dew point at site elevation, and the cooling or heating process with water removed and sensible, latent and total heat.
Humidity, dew point, enthalpyConvert moisture between wet and dry basis, work out dry matter, final product and water evaporated, the heat load (solid, water and latent heat), fuel energy from the dryer efficiency or the drying air, the consumption of gas, propane, oil, wood, electricity or steam and the cost per ton.
Water evaporated, energy, cost/tImportant notice: Indus Metrics tools produce estimates and pre-sizing results from the data you enter and from published engineering methods. They do not replace design, calculations or reports signed by a licensed professional engineer (PE), nor verification against the applicable codes, standards and regulations, such as OSHA rules and the ASME codes. Material and fuel properties vary: check manufacturer data or your own process analyses before deciding. By using this site you agree to the Terms of Use.
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