Question 1

How many CFM can the exchanger provide ?

Accepted Answer

The Avi35 Exchanger has variable speed fans. It can deliver a minimum of 250 CFM to a maximum of 1500 CFM.

Question 2

How many Avi35 exchanger do I need in a broiler barn ?

Accepted Answer

We recommend between 3500 to 4000 broiler chickens per Avi35 exchanger, assuming a bird density of 34 kg per square meter. If density is closer to 38 Kg, we recommend 3000 birds per exchanger. This ratio will provide enough fresh air from the exchanger until 21 days of age. After three weeks, other conventinnal ventilators are added to complement the exchangers

Question 3

Should I shut off my exchangers in summer ?

Accepted Answer

You can benefit from the exchanger in the summer for the first 14 days of age, especially if the nights are cool. When the outside temperature is close to the room temperature set point, the heat exchanger does not bring benefits in heat recovery. They should be shut off.

Question 4

Does a heat exchanger remove barn humidity ?

Accepted Answer

Technically, ventilation removes humidity. The heat exchanger will allow you to increase your minimum ventilation at little cost since you recover the heat from the exhaust air. Hence you will increase your air exchange and remove more water from the broiler barn very efficiently without limited heating.

Question 5

Does the moist and fresh air mix in the exchange core ?

Accepted Answer

No, the fresh air and the moist air have individual pathways to go through. They flow in tubes next to each other separated by a very thin wall.

Question 6

Is the material used build of the exchanger core influence its efficiency ?

Accepted Answer

The heat transfer properties of the material in the exchange core is insignificant when the wall thickness is very thin in an air to air exchanger. This is simply because the resistance of air in heat transfer overcomes by many folds the resistance of the very thin wall, no matter the material. The total surface area of the walls for heat exchange plays a much more important role to improve heat transfer efficiency. 
The material is significant when you exchange heat from a liquid to air or a liquid to a liquid. Simply because the heat transfer resistance of liquids is low.

Question 7

How often must I pressure wash the exchange core ?

Accepted Answer

The rinsing system that comes standard with Avi35 removes a significant amount of dust daily; however, some dust still accumulate over time. 
In a broiler production, we recommend to pressure wash at every cycle to maintain good heat transfer. ( Dust increases wall thickness and is an insulator). In other productions, we recommend to inspect the core at least every 6 weeks and pressure wash if necessary.

Question 8

Can I pressure wash the exchange core

Accepted Answer

Absolutely, the core is vey resistant. It is made of polymer , rubber and stainless steal. It can resist most soaps and disinfectants. You can pressure wash both air pathways at 3000 psi with a flat 15 degrees nozzle at 12 inches away. We recommend using  hot water.