Space Calculations for Air Conditioning Plant

0.07m² per 10m² equipment space rule of thumb....

thank you

Who on earth ever gave you such a task? Is this architecture homework?

yes

go vav

SAVINGS and SAVING Space Calculations for Air Conditioning Plant

Perhaps review some of the school districts where mandates for third party rated equipment selections were not required such as states like Ohio blocked so many valued potential designs with commissions stating "compliant with Energy Star' was OK but engineering mandated "third party rated equipment only" , ignoring OEM certified and warranted support of meeting all claims...

Therein you will find states like KY TN L and AR are not so keen on VAV, but rather "spot" HVAC and less centralized design.

Some GEOTHERMAL equipment rooms have NO pump racks nor big motor-saver switches for the entire 500 ton facilities, All you see is pipes overhead, or a flat plate Heat exchanger- if used with open-well water because the "VAV"-like systems with more performance per KWH, are individually "pumped" at each unit having a pump and check valve or pairs of units on flow centers such as at FlowCenterProducts.com

for multi-variable most efficient KWH/sq ft ...

the schools already 5 years ago announced at 2009 ASHRAE that were under 2.2 kwh per sq ft per year on just the TOTAL kwh calcs... used GeoThermal Heat Recovery of Cooling to 100% On-Demand Hot water needed, with the loop pumps (condenser fans) off completely, at those heat-reclaiming times.

I have reason to believe it is always HVAC-HW-Reclaim in a single systemic package, after reviewing companies that dominated school districts, of small name and no third party ratings::: but today the same are now third party ETL and EnergyStar(tm) rated with variable compressors of TRANE, WaterFurnace/GEOSTAR, ClimateMAster, and Hydro-Temp of AR - all with (not SEER) but EER's over 40 in AHRI raw data of 3/13 for the low-medium speed operation (~75% running hours) of the VFD compressors.

WITH HWater heat-reclaim, COP's hit 6's and EER's near the 60 mark, at on-demand instant HW production. modular to load matching, and Corner (3-sided, rt-triangular foot prints) Consoles, and ductless HydroZoning to other consoles and fancoils have proven less costly to maintain, zone , etc, and repeatedly now known.

Hydro-Temp also builds to 75 Ton RTU and more and ERV to HRV of up to 33,000 cfm for comm and built for others. DeHumidification is more easily controlled nearer an evaporator, with less KWH per modular system and zones of "little" heat pumps. See Kavanaugh, Hybrids (with towers and ground loops and dry-coolers) in geothermal searches since the 1990's

Like supplemental heat to heating dominant GT designs, 60% may be GT of the Cooling block load (and 10% tax credit if you are for profit and qualify- Hot Water system inclusive if GT) ~ then

older style cooling can be air heat pumps or chillers and towers as then the 'supplemental' but those may be wanted as reverse-cycling "heat-pump" water:water GT-chillers, now as new geothermal systems "tied" to the GT Earth Coupled Loop (ECL, gle) for qualifying with specific credits. HVAC-HW-RECLAIM may be a more total picture for review

Without knowing all the details on the building it is difficult at best to answer your homework for you. Next time give more info like:

1. Cubic meters of enclosed space?
2. Type of building? (Concrete, brick, wood and stucco, wood on wood)?
3. Is the building insulated?
4. Number and size of windows,doors and any other openings?
5. Heat load of lighting and switch gear?
6. Standard or vaulted ceilings?
7. Type and age of roof?
8. And anything that you would consider as affecting the cooling system?

BA

Largest surgical center in the US and the Federal Reserve DC and many large schools have little to not using any VAV. (are GeoThermal , though; as is growing, since the 1981 patents are complementarily being copied to date)

TOPIC is OP: Cooling needs-

a museum needs hot water with 4000 people a day. Why not get on the topic of "FREE" and much less costly in maintenance and overhead of VAV gas and a/c...?

One facility dropped the maintenance contract to only less than 25% of the previously GAS-HVAC projections pre-calculated.

Another from 350 ton engineered went with 275 GeoThermal and Heat-reclaiming to Hot Water needed. (better cooling effect at times in recovery) plus just 30% GeoThermal individual units (RTU's to 75 tons) and for profit? 10% tax credit including HW attachments, then? ---Can be a LOWEST first cost designed---

maybe that is why the highway departments of rest centers are using more as described above in HW-Heat-Recovery WHILE cooling.

I will be off the topic of most VAV, but free HW while cooling? hmm. 2 funny.

on topic for the threader OP:

"would like to design it completely air conditioned. someone help me with the space calculations of cooling plant,A.H.U., and cooling tower , openings of ahu"

today it is a/c and HW needs, only the advocates of separating the two will not benefit the heat-recovery, such as was patented within off-the-shelf systems since 1981, and left more well known systems depleat of the reclaim "interests"

You can't get the accurate calculations here, rather it would be favorable, if you take assistance from some experienced air conditioning repair port st lucie technicians who would help you in your project.