How do you calculate the efficiency of a chilling plant?
EER is calculated by dividing a chiller’s cooling capacity (in Btu/h) by its power input (in watts) at full-load conditions.
How do you calculate the chilling capacity of a plant?
Divide Q (BTUs per hour) by 12,000 (the number of BTUs in one ton of cooling capacity). This yields the chiller capacity required to handle the process heat load in tons per hour: Example: 240,000/12,000= 20 tons/hr.
What is chiller efficiency?
Chiller efficiency depends on the energy consumed and the cooling delivered. Absorption chillers are rated in fuel consumption per ton cooling. Electric motor driven chillers are rated in kilowatts of electricity per ton cooling.
How is chiller ikW calculated?
Performance Assessment Of Chiller Main performance parameter is ikW/TR and it is define by ratio of power input to compressor divided by tons of cooling produced. Lower ikW/TR indicates higher efficiency. COP (Co – efficient of Performance) is define by ratio of EER by 3.413.
How is chiller IPLV calculated?
Integrated Part Load Value (IPLV) : Hence to calculate the exact performance value considering different loading conditions, IPLV is used. IPLV Formula = 0.01A+0.42B+0.45C+0.12D; where A,B,C&D are the COP values at 4 loading points respectively.
What is kW cooling capacity?
‘Cooling capacity’ is the measure of an air conditioning system’s ability to remove heat from a room, thus making the room ‘cooler’. Generally the unit used for this measurement is specified in Kilowatts (kW).
How do you calculate kW cooling capacity?
Using the energy equation of Q = ṁ x Cp x ΔT we can calculate the cooling capacity. We add 273.15K to the celcius to convert it to units of Kelvin. The Specific heat capacity (Cp) is measured in units of kJ per kg per Kelvin. This gives us a final answer of Q = 2,500kW of cooling.
What is NPLV and IPLV?
IPLV stands for integrated part load value and NPLV standfor non standard part load efficiency. IPLV or NPLV is used to evaluate efficiency of chiller at different loading condition.
How does chiller plant design affect the efficiency of a building?
Chiller plant design can have a significant impact on the ongoing operating costs of a building. Strategies such as chiller plant optimization, water side economizer and heat recovery chillers can create positive results by improving overall plant efficiency and reducing energy costs.
How do you calculate the efficiency of a chiller?
Calculating the efficiency of a chiller is fairly simple. It is measured in “COP” which stands for Coefficient Of Performance. The Coefficient of performance is just a ratio of the refrigeration effect produced by the chiller against the amount of electrical energy that went into the machine to produce this.
Can a variable flow chilled water plant reduce pump energy costs?
Providing a variable flow chilled water plant that is connected to a chilled water distribution piping network with two or more substantially different pressure drops could result in significantly less pump energy savings and the potential for the existing control valves leaking by in the lower pressure drop chilled water loop.
What are the different types of chiller plant pumping?
The most common types of chiller plant pumping arrangements are constant flow, primary-secondary variable flow and variable primary flow systems. For the vast majority of chilled water plants, the energy efficiency of the plant can be maximized by varying the pumping capacity to match the required thermal load.