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ECONOMY SHEET
Economy Of Ecovent V/s Exhaust Fan
EXHAUST FAN
| Rating Of 24' Exhaust Fan |
- 0.75 Kva |
| - 0.75 x .8 |
| - 0.60 Kw |
| Three Shift Working |
- 0.6 Kw x 24 Hrs |
| - 14.4 Kwh / day |
| 30 Days Working/ Month |
- 14.4 x 30 |
| - 432 UNITS / Month |
| Yearly Basis |
- 432 x 12 |
| - 5184 UNITS |
| Running Cost |
- 5184 x Rs.4.80 |
| - Rs.24883/- Year |
| - Rs.2074/- Month. |
Exhaust Fan REQUIRES MAITENANCE And RECURRING COST is exorbitant i.e. Rs.2074/- per Exhaust Fan per Month.
ECOVENT
ZERO RUNNING COST, NO MAINTENANCE, NO NOISE, TROUBLE FREE WORKING.
Pay back period of cost of 28" Ecovent varies from 2 months onward depending upon number of Exhaust Fans / Power Rating of Exhaust System.
It improves DAY LIGHT hence requirement of Artificial Light also reduces. Thus further saving in unit consumption.
While calculating Pay Back period of Ecovent, if cost of Exhaust Fan and saving in power because of improved Day Light and 80% benefit in Depreciation is taken into account, which is also very high, then it drastically reduces Pay Back Period.
COMPARISION AND PAY BACK SHEET - 24" EXHAUST FAN Vs. ECOVENT
For Example :
| Shed Size |
82 x 82 x 26 CuFt |
| No.Of Air Changes |
15 |
| CFM Of Exhaust Fan |
6250 |
| No.Of Exhaust Fans Required |
7 |
Running Cost Of One Exhaust Fan
( Three Shift Working/Month ) |
Rs.2074/- ( Rs.4.80/- Unit) |
| Running Cost Of Seven Exhaust Fans |
Rs.14518/- Month |
| Yearly Basis |
Rs.174216/- |
Cost Of Exhaust Fans
( App.Rs.5500/- Fan ) |
Rs.38500/- |
| Total Of Running Cost & Cost Of Ex. Fan |
Rs.212716/- ( Rs.17726/- Month) |
| Ecovents Required |
29 |
| App. Cost Of Ecovents |
Rs.188000/- |
Income Tax Benefit
(80% Depreciation On Ecovent ) |
Rs.51000/- |
| Post Tax Depreciated Value Of Ecovent |
Rs.137000/- |
| Pay Back Period Of Ecovent |
8 Months ( It Does'nt Include Maintenance Charges Of Exhaust Fan.) |
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