MECHANICAL ENGINEERING DESIGN - THIS IS YOUR SITE on Dec 31, 2098Mechanical Engineering is one of the cornerstones of the Engineering Profession. Engineering design in itself is a complex undertaking, requiring many skills. Extensive relationships need to be subdivided into a series of simple tasks.The c...
DIFFERENCE BETWEEN DIESEL ENGINE AND GASOLINE ENGINE BASIC INFORMATION on Nov 16, 2012 in Diesel Engines Internal Combustion Engines In many respects, the four stroke cycle gasoline engine and the four stroke cycle diesel engine are very similar. They both follow an operating cycle consisting of intake, compression, power, and exhaust strokes. They also share the sa...
SICK BUILDING SYNDROME BASIC INFORMATION on Nov 1, 2012 in HVAC Sick Building Syndrome (SBS) is a worldwide and complex problem. SBS initially was used to describe a building where a set of varied symptoms were experienced predominantly by people working in anair conditioned environment.Subsequent early...
WHAT IS HVAC PSYCHOMETRICS? on Nov 1, 2012 in Psychometrics HVAC Psychrometrics is the science of the properties of moist air, i.e., air mixed with water vapor. This subset of thermodynamics is important to the HVAC industry since air is the primary environment for all HVAC work.Whereas oxygen, nitr...
HUMIDIFIER FEVER BASIC INFORMATION AND TUTORIALS on Nov 1, 2012 in HVAC Symptoms of humidifier fever are “flu-like,” lethargy, arthralgia (neuralgic pain in the joints), myalgia and fever. Sometimes headaches, polyuria (excessive urination) and weight loss occur. More severe symptomsinclude shortage of brea...
HEAT MEASURED IN HVAC SYSTEMS BASIC INFORMATION on Nov 1, 2012 in Heat Transfer Heat Sensible HeatPeople, lights, motors, heating equipment and outdoor air are examples of substances that give off sensible heat. A seated person in an office, for instance, gives off approximately 225 Btuh of sensible heat into the condi...
UNITS OF HEAT ENERGY AND HEAT POWER BASIC INFORMATION on Nov 1, 2012 in Energy Heat A British thermal unit (Btu) is used to describe the quantity of heat contained in a given substance. Because the Fahrenheit scale is the standard system of temperature measurement used in the United States, a Btu is defined as the amo...
CAR HEATER FAN BASIC INFORMATION AND TUTORIALS on Oct 7, 2012 in HVAC Heat Heating systems use a heater fan attached to a permanent-magnet, variable-speed blower motor to force warm air into the passenger compartment. The higher the voltage applied to the motor, the faster it runs.A switch mounted on the...
CAR HEATER FAN BASIC INFORMATION AND TUTORIALS on Oct 6, 2012 in HVAC Heat Heating systems use a heater fan attached to a permanent-magnet, variable-speed blower motor to force warm air into the passenger compartment. The higher the voltage applied to the motor, the faster it runs.A switch mounted on the...
HVAC PROJECTS CHANGE ORDERS BASIC INFORMATION AND TUTORIALS on Oct 5, 2012 in HVAC In the process of construction, nearly always a condition will arise that is inadequately or incorrectly defined by the contract documents. Often this will be the result of conflicts with other trades, due to lack of coordination among designers. A...
