Skip to main content

Why Engine or Motor Power calculated in HP

Horsepower




  From your car, to your well motor power of almost every engine you deal with are calculated in horsepower.None of this things seemingly nothing to do with horse,so where did that measurement come from?
  Well,actually horses.In the early days of steam engine inventor and engineer James Watt made some significant improvement to the Newcomen steam engine and attempted to market and sell his new version.This was easy enough when watt dealing with the people who already have a Newcomen engine and could directly compare engine output of old engine with his new version.
  Some potential customers didn't have a steam engine at all yet,were they are still using draft horses to move there weight and power machinery.He deeded a way to explain his engine in a way that these people would understand.
  He worked out the idea of horsepower while watching the some horses lift coal at mine and he also watched a horse turn a mill.He determined that the horse can do a 33,000 foot-pounds of work in a minute and dubbed that a 1 horsepower.He then used that as a way to make comparison of horse and his machinery and told that his steam has power of equivalent to the 10 horses power.From then every machine power Measurements done in Horsepower.

Comments

Popular posts from this blog

How to control Temperature and Humidity in Air Handling Unit

  How to control Temperature and Humidity in Air Handling Unit Overview Air Handling unit is a system used to supply temperature and Humidity controlled filtered air to the cleanroom. For air filtration various types of filters are used in AHU. And for temperature and Humidity controlling cooling and heating coils are provided in AHU. Goals Control the temperature of air used in the cleanroom  Control the humidity of air used in cleanroom  Air filters Specifications    The air Handling unit consists of Air filter  Cooling coil Heating coil Air blower HEPA Filter  Controlling of Temperature and Humidity  By Cooling Method  The cooling coil recirculates the chilled water having temperatures between 4°C to 6°C. This chilled water comes from the Chiller through centrifugal pumps. When we start the Air Handling unit blowers sucks the air through the pre filters of the air Handling unit. When blowers sucks air, it passes through the cooling co...

AIR FLOW, AIR VELOCITY, ACPH, AHU CAPACITY

Air Changes per Hour AIR VELOCITY AND ACPH OF ROOM OR AREA   Procedure to be followed: Air Velocity Measurement and Calculation of Air Changes: Objective : To demonstrate  that the   air system is balanced and capable of delivering air velocities and providing number of air changes per hour in the respective rooms as   per requirement. Equipment to be used: Hotwire Anemometer or capture Hood Pre Requisite: Air Volumes through supply and return grills and filters should be adjusted as per the design requirement of Air Change Rate and Differential Pressure. Test Method : Ensure that the Supply blower of the AHU is "ON" prior to the start of the observations. For compliance of air change rate, velocity to be measured at 5   different locations to below the each terminal or Grill (Four Corners and center) with the help of calibrated Anemometer. Calculate the   average  velocity of the air coming from Plenum HEPA filter / supply air grill. Calculate the air...

Why ice forms at cooling coil and Suction line in Refrigeration system

 Why ice forms at cooling coil and Suction line in Refrigeration system       it's all about the relationship between a temperature and pressure and how the pressure affect the boiling point of the refrigerant. As the pressure of refrigerant increases then the temperature and boiling point also increases,  when pressure decreased temperature and boiling point also decreases. Refrigeration and air conditioning systems take use of it to cool the air or liquid.   Normal Refrigeration System      In normal refrigeration system compressor compresses the refrigerant which causes the increase in pressure and temperature of refrigerant. The hot vapour refrigerant pass through the condenser in condenser heat exchange happens and refrigerant condensate into liquid forms.Before entering in the evaporator high pressure liquid refrigerant pass through the expansion of valve. The actual device used depends on the Refrigeration system but capillary t...