IDEC & Hybrid Evaporative Cooling from AIR2O

What is Evaporative Cooling?

• Evaporative cooling is a natural phenomena which occurs naturally whenever water comes into contact with warm air.

• Natural evaporation takes place which absorbs the heat and cools the hot air by several degrees.

• This principle is illustrated by the chilling effect you feel when you come out of a swimming pool and a breeze blows across your body. The chill you feel is caused by the evaporation process of the water drying quickly from your body.

Basic Evaporative Cooling Concepts

With indirect evaporative cooling, a secondary air stream is cooled by water. The cooled secondary air stream goes through a heat exchanger, where it cools the primary air stream. The cooled primary air stream is circulated by a fan.

Indirect evaporative cooling does not add moisture to the primary air stream

With direct evaporative cooling, outside air is blown through a water-saturated medium (usually cellulose) and cooled by evaporation. The cooled air is circulated by a fan.

Direct evaporative cooling adds moisture to the air stream close to saturation. The dry bulb temperature is reduced, while the wet bulb temperature stays the same

Direct Evaporative Cooling

Indirect Evaporative Cooling

Direct Evaporative Cooling Only

Indirect Evaporative Cooling Only

Added moisture

What is IDEC Evaporative Cooling?• IDEC Evaporative Cooling is a 2 stage evaporative cooling system• Using potable water - (or Grey Water)• 1st stage water is cooled via a indirect heat exchanger allowing us to pre cool the

air with no added moisture at approx.80% efficiency• 2nd stage is a direct evaporative cooling section achieving 95% efficiency• This Combination means we can achieve 125% cooling of the wet bulb

temperature with approx. 50% less moisture• Provides superior performance than conventional direct evaporative cooling

approaches• Significant Energy Savings• Water consumption is very low• DX or chilled water can be incorporated (Hybrid)

IDEC Technology

THE NUCLEUS OF OUR SYSTEM(1st

stage ) is an indirect heatexchanger cooled by an integralcooling tower section.

The Cooling tower section operating at0.5°c or 1°F Wet bulb approach thankto the large surface area and low waterflow design

This cool water then transferred tohigh efficiency heat exchanger

That allow us to cool the air withoutphysical contact with water

97o F 15% RH69.8o F

37% RH

68.3o F79% RH Direct Evaporative Cooling Only

Indirect Evaporative Cooling Only

The Indirect /direct combination.

97o F 15% RH69.8o F

37% RH

68.3o F79% RH Direct Evaporative Cooling Only

Indirect Evaporative Cooling Only

59o F95%RH

IDEC Evaporative cooling using combination of indirect and direct to achieve superior performance

Cooling Process Demonstration

5 Ton unit

Evaporative Effectiveness .it is a function of the Supply temp and the wet Bulb depression and it is to be consider the constant number for evaluation to any evaporative cooler.

• EV = (Supply dry bulb temp- OSA dry bulb temp)/(OSA wet bulb temp- OSA dry bulb temp) • Our IDEC EV in Fresno is 128%• ASHRAE 0.4% Fresno Design Condition is 103.6 DB/ 71.2 WB• Supply temp at design condition Supply =103.6- (103.6-71.2)*1.28=62.1 F • QS=1.08* (78-62)*2500 CFM= 43,000 BTU • In general the Sensible to latent heat ratio is 70/30 • All evaporative cooler is one path system thus reject the latent heat out of the building• the equivalent capacity for Our IDEC system at Fresno Design condition is 61 MBTU or 5 ton

ACSESS(TM) CONTORL (Dew Point Analysis)

77o F 50RH%59 o FSaturated

Fresh Air Free Cooling Economizer mode

Direct Evap

IDEC

DX

US Dept. of Energy World Weather Data

EPW FILES or TMY3

Cairo Egypt

Power Consumption and peak Demand Cairo

Power Consumption and peak Demand Aswan

Performance Against Compressor Based System

IDECIDECIDEC

Hybrid – “Cooling without Compromise”

• IDEC technology allows us to include DX or Chilled Water Coil to provide cooling without compromise

1. High efficiency direct drive plug fan

Standard Features

Standard Features

2. High efficiency secondary axial fan with low noise design

1. High efficiency direct drive plug fan

76.8o F 52% RH

61.7o F 95%RH

100o F 15% RH

DX cooling to meet demand

IEC & Hybrid Evaporative Cooling

3 Models – Bespoke available

3 Models – Bespoke available

3 Models – Bespoke Available

• Significantly less energy use versus traditional air conditioning. Up to 80% saving

• 100% Fresh filtered air throughout your building (IDEC Mode)

• No recirculation of stale air (IDEC).

• No harmful gases are used in our IDEC process.

• Advanced controls provide automated water quality management.

• Thermostatically controlled operation.

• Efficient use of water

FEATURES & BENEFITS

Applications

• FAHU & Pre Cooling of Fresh Air Load to dramatically reduce the energy load

• Cooling

• Energy Recovery – at least twice the efficiency of a thermal wheel

Applications – Pre Cool of Fresh Air

• Indirect evaporative cooling can dramatically reduce the fresh air load

• Can help the AC as we reduce the enthalpy of the fresh air

FAHU &Pre Cooling• Pre Cooling with indirect

evaporative cooling is extremely beneficial for fresh air units. Saving can vary between 32% to 75% and average of 51% across the year

• * data from ASHRAE paper written by Saudi Aramco utilising Our IDEC technology

Recent Publications

In suitable climates, IDECevaporative cooling representsthe next generation of ultra-efficient packaged rooftop HVACunits with the potential tosignificantly reduce commercialbuilding cooling energy use insuitable drier climates in a costeffective manner.

Displacement ventilation required 65F supply and it can reduce sensible load by at least 25%

Energy Recovery in Hot Climates

➠ Minimizing Energy Consumption is every engineer Goal

➠ Evaporative cooling of the exhaust air can dramatically and inexpensively increase coil energy recovery

➠ A long established fact seemingly long forgotten by design engineers?

➠ Various system type include; Cross Flow (approx. 60% efficiency) and CounterFlow Heat Exchanger (approx.70% Efficiency), heat pipe, run around coils etc..

➠ Thermal Wheel is popular selection within industry @ 73% efficiency

➠ Ultimate goal in all energy recovery is to recover and deliver air at the same enthalpy of the internal design condition so there is no +/- impact on the AC system

Energy Recovery in Hot Climates

➠ Heat Transfer process is always a function of the sensible heat between the exhaust and supply air streams (which ever form of heat exchange we use)

➠ So by cooling the exhaust air , thus creating a larger temperature difference, we greatly increase the capacity for heat recovery

Our IDEC Heat Recovery Process➠ Our IDEC uses Evaporative Heat Recovery (the

term we use when we employ direct evaporative cooling in the exhaust air stream)

➠ Return air is cooled adiabatically by means of a direct evaporative cooling pad. The water utilisedis cooled to within approximately 0.5°c of the return air wet bulb temperature

➠ This cool water is then transferred to the high efficiency heat exchanger facing the intake (outdoor) air

➠ The high Delta T this creates higher heat transfer and higher energy recovery

Our IDEC Heat Recovery V Thermal Wheel

Performance Example

Summary➠ Our IDEC is at least twice as effective than a Thermal wheel

➠ Our IDEC achievable efficiency 156%. (Thermal Wheel 73% efficiency)

➠ Our IDEC can dehumidify across the recovery process in humid climates.

➠ No cross contamination. Our IDEC has totally separate air streams

➠ Lowest investment cost.

➠ Less maintenance.

➠ Our IDEC recovery system has 50% less static pressure, saving additional energy in the Exhaust and Intake fans

Applications

• Stand Alone or Hybrid Cooling for any project

• Up to 80% savings over conventional AC

• 100% Fresh Air Cooling units for hospitals, laboratories, high occupancy areas

• Energy Recovery - Ultra efficient – Huge Energy Savings

Suitable for: • Schools

• Restaurants

• Hospitals

• Malls

• Warehouse

• Factory

• Work Shop

• Offices

• Government Buildings

• Any outside Space!

Outdoor Cooling Rule of Thumb• Outdoor cooling based on an effective cooling area which typically extends

12ft from the supply diffuser outlet.

• Design is to be based on 60 ACH (Air Changes per Hour), ideally maximum air discharge height of 9ft.

• Air speed from the supply jet type diffusers should be in the region of 2500-3000 FPM to provide an effective terminal velocity of 600-750 FPM

• Don’t be shy with air flow!

Palm Tree CoolingProvides Shade and cool air

CFD

5 Ton unit installed at TelefónicaCell Phone towers control room

Q22 World Cup – Outdoor cooling

Aspire Stadium From outer space ( google Earth View )

as a result we got some enquiries from extraterrestrials species

Q22 World Cup

East Street Data Center , Portland Oregon, USA

Universal Studio Singapore

• The largest outdoor-Cooling system in the world designed and operating using Our IDEC technology

Salt Lake City Utah ( IDEC units with heating coils)

Mall of Qatar ½ Million CFM of Evaporative Recovery in the Largest Mall in the Middle east

What Is Coming

• All the Units will be have BacnetCommunication protocol as a standard feature

Thank you from AIR2O