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US 12,747,877 B2Granted
System and method for indirect evaporative cooling
AssigneeA.T.E. Enterprises Ltd.
InventorKalpesh Sudhir Karnik
Life of this patent
Estimating the term…
Abstract
A cooling system using indirect evaporative cooling (IEC) is disclosed. The implementation discloses use of two stages of IEC with two separate IEC exchangers. The two-stages of IEC exchangers are arranged in a manner such that the prime air mover (primary blower) pulls (sucks) air through one exchanger (1st stage) and then pushes air through the other exchanger (2nd stage).
Claims11
A multistage indirect evaporative cooling system comprising:
- a first stage indirect evaporative cooling heat exchanger system comprising a first stage indirect evaporative cooling heat exchanger, a water tank, a pump, and a water distribution system, said water distribution system comprising an arrangement of components, arranged to distribute water for evaporation and a pipeline from the pump to the arrangement of components, the water distribution system providing moisture to the first stage indirect evaporative cooling heat exchanger;
- a first blower motor combination configured to pull a first stage primary air stream through the first stage indirect evaporative cooling heat exchanger system;
- a second blower motor combination located at an exit of a first stage secondary air stream from the first stage indirect evaporative cooling heat exchanger system and configured to pull the first stage secondary air stream through the first stage indirect evaporative cooling heat exchanger system;
- a face of the first stage indirect evaporative cooling heat exchanger being located to receive air, said face having sections to take in the first stage primary air stream and sections to take in the first stage secondary air stream;
- and,
- a second stage indirect evaporative cooling heat exchanger system comprising a second stage indirect evaporative cooling heat exchanger, a water tank, a pump and a water distribution system, the water distribution system comprising an arrangement of components, arranged to distribute water for evaporation and a pipeline from the pump to the arrangement of components, the arrangement of components providing moisture to the second stage indirect evaporative cooling heat exchanger;
- the first blower motor combination being located between the first stage indirect evaporative cooling heat exchanger system and the second stage indirect evaporative cooling heat exchanger system;
- a face of the second stage indirect evaporative cooling heat exchanger being located to receive air from the first blower motor combination;
- said face having sections to take in a second stage primary air stream and sections to take in a second stage secondary air stream;
- the first blower motor combination also being configured to pull the first stage primary air stream through the first stage indirect evaporative cooling heat exchanger system and also to push a first portion of the first stage primary air stream through the second stage indirect evaporative cooling heat exchanger system as the second stage primary air stream, and to push a second portion of the first stage primary air stream through the second stage indirect evaporative heat exchanger system as the second stage secondary air stream;
- wherein the first blower motor combination pulls the first stage primary air stream through the first stage indirect evaporative cooling heat exchanger system in a substantially straight linear direction as the second stage primary air stream and pushes the first portion of the first stage primary air stream in the substantially straight linear direction and also pushes the second portion of the first stage primary air stream, referred to as the second stage secondary air stream, such that in each respective indirect evaporative heat exchanger system the first stage primary air stream and the second stage primary air stream are passed through dry passages while simultaneously the first stage secondary air stream and the second stage secondary air stream are passed through wet passages.
8 more elements
A method for achieving an efficiency of greater than 82% in a multi-stage indirect evaporative cooling system, the method comprising:
- placing a first blower motor combination between a first stage indirect evaporative cooling heat exchanger system and a second stage indirect evaporative cooling heat exchanger system;
- the first stage indirect evaporative cooling heat exchanger system comprising a first stage indirect evaporative cooling heat exchanger, a water tank, a pump and a water distribution system comprising an arrangement of components, arranged to distribute water for evaporation and a pipeline from the pump to the arrangement of components, to provide fluid to the first stage indirect evaporative cooling heat exchanger;
- a face of the first stage indirect evaporative cooling heat exchanger being located to receive air;
- said face having sections to take in a first stage primary air stream and sections to take in a first stage secondary air stream;
- the second stage indirect evaporative cooling heat exchanger system comprising a second stage indirect evaporative cooling heat exchanger, a water tank, a pump and a water distribution system, the water distribution system comprising an arrangement of components, arranged to distribute water for evaporation and a pipeline from the pump to the arrangement of components, the water distribution system providing moisture to the second stage indirect evaporative cooling heat exchanger;
- a face of the second stage indirect evaporative cooling heat exchanger being located to receive air from the first blower motor combination;
- said face having sections to take in a second stage primary air stream and sections to take in a second stage secondary air stream;
- placing a second blower motor combination at an exit location of the first stage secondary air stream;
- pulling, using the first blower motor combination, the first stage primary air stream through the first stage evaporative cooling heat exchanger system;
- pulling, using the second blower motor combination, the first stage secondary air stream through the first stage indirect evaporative cooling heat exchanger system;
- pushing, using the first blower motor combination, a first portion of the first stage primary air stream through the second stage indirect evaporative cooling heat exchanger system, as a second stage primary air stream;
- wherein the first blower motor combination pulls the first stage primary air stream through the first stage indirect evaporative cooling heat exchanger system in a substantially straight linear direction and pushes the first portion of the first stage primary air stream, referred to as the second stage primary air stream, in the substantially straight linear direction;
- and
- pushing, using the first blower motor combination, a second portion of the first stage primary air stream through the second stage indirect evaporative cooling heat exchanger system as a second stage secondary air stream;
- in each respective indirect evaporative cooling heat exchange system, the first stage primary air stream and the second stage primary air stream being passed through dry passages while simultaneously the first stage secondary air stream and the second stage secondary air stream are passed through wet passages;
- wherein the efficiency of greater than 82% is obtained.
13 more elements
Dependencies are inferred from the claim text.