Comment on: Antipodean advances
http://www.oz-chill.com - Anyone installing, removing, altering, repairing, servicing, testing or certifying the gas system of a device (ie charging, discharging or breaking into the refrigeration system that uses hydrocarbon refrigerants) must hold a Gas Work Licence (Hydrocarbon Refrigerants) to do so.
Comment on: A new era for choice
http://www.oz-chill.com - Why a matched system matters?
If the indoor coil is not matched with the outdoor unit, several major problems can occur with your system:
Capacity will not be suffi cient to keep you comfortable
Energy bills will increase due to reduced efficiency
Your manufacturer's warranty may become void
Reliability will suffer and compressor failure is more likely to occur
The energy efficiency of a 13 SEER system requires a larger condensing unit and indoor coil. Each unit can be as much as one-and-a-half times the size of those in a 10 SEER system. This larger size allows more thermal energy to be transferred from your home to the outside.
Just as importantly, the outdoor unit must be matched with an indoor coil that's just as efficient. Improperly matched components can put additional stress on a system, which can cause it to fail.
Also, be sure you change the lineset to allow the refrigerant to circulate properly to avoid capacity, efficiency, and reliability problems.
http://www.oz-chill.com - Put it in the basement or other cool area of the house. The floor of the room is usually several degrees cooler than the ceiling, so try putting the tank down on the floor. Move the tank out of any direct sunlight. Put the tank directly in front of the outflow from your AC system.
Comment on: Is it time to stop using R404A?
Based on these assumptions, the direct CO2eq emissions for the three refrigerants were estimated to be 33.65, 18.07,
and 0.003 Mkg for R404A, R407A, and R744, respectively. The direct emissions of R404A were approximately
three times that of the lifetime indirect emissions. This is largely driven by the high GWP of R404A. Although
R744 consumed on average 11% more energy than R404A, it had practically no direct emissions. Over the lifetime,
R744 has a significant emissions payback. Adding direct and indirect emissions result in the LCCP shown in Figure
7. On average for the 16 cities, R407A and R744 resulted in 37% and 77% less LCCP compared to R404A,
respectively. R407A is a current drop-in replacement for R404A with a significant potential for emissions reduction
with minimum energy penalty. For the long-term, R744 present the greatest emissions reduction. Even if the
technology advances such that a 1% annual leakage rate can be achieved, R744 still presents significant emissions
reduction, as shown in Figure 8. On average; R744 system resulted in 14.2% and 4.2% LCCP reduction compared to
R404A and R407A respectively. R407A with only 1% annual leakage rate showed to result in lower LCCP than
R744 systems in hot climates such as Phoenix, AZ. It is noted that several market barriers exist for R744 which
hinder its market penetration. Among these are first cost due to a total system changeout and energy costs as the
result of higher energy consumption and peak demand charges - http://oz-chill.com