Quick orientation
Use this page to assemble envelope, outdoor air, crop, moisture, lights, people, equipment, pull-down and uncertainty components.
Simple explanation
Cooling Load Model helps the grower assemble envelope, outdoor air, crop, moisture, lights, people, equipment, pull-down and uncertainty components. The crop requirement is the starting question, not an equipment size.
Biological purpose
Engineering begins only after the crop stage, biological load and acceptable room response are declared.
Operator explanation
Observe the crop, room pattern and change history before changing a control. Record what changed, where, when and under which operating mode.
Engineering explanation
Define the control volume, design case, load components, equipment boundaries, instrumentation and expected response. Biological requirement is not equipment size.
What to observe
Look for spatial gradients, time trends, surface condition, crop response, door events, water events, equipment state and alarms rather than a single display value.
What to measure
Retain sensor ID, unit, location, height or depth, timestamp, calibration state, crop stage, room load and operating mode with every measurement.
Variables that interact
assemble envelope, outdoor air, crop, moisture, lights, people, equipment, pull-down and uncertainty components. Temperature, moisture, carbon dioxide, air movement, crop load and control actions can move together, oppose one another or hide a local problem.
What can go wrong
Common errors include a non-representative sensor, an undefined design case, a fan rating treated as delivered airflow, an air-change rate treated as distribution, or a biological target treated as plant capacity.
What changes at commercial scale
Larger crop loads, longer air paths, more simultaneous equipment, tighter recovery needs and higher failure consequences increase the need for redundancy, commissioning and data history.
Reference and review boundary
Background/reference map: Farm Design for White Button Mushroom Cultivation; National Building Code of India 2016; 2025 ASHRAE Handbook Fundamentals table of contents; ISHRAE standards and position papers. This map supports further editorial work; it is not route-specific technical validation. Foundational, current, regulatory and engineering references retain their distinct roles, and manufacturer literature may only establish equipment-specific data.
Cooling-load foundation
Enter only independently derived component loads. The tool will not invent missing crop, weather, infiltration or selection assumptions.
No selection margin, redundancy, part-load or pull-down capacity is applied automatically.
Engineering unit converter
NIST-traceable conversion factors. Conversion does not validate the design basis.
Enter a value to convert.
Technical diagrams
Original diagrams expose system boundaries, air paths, feedback and engineering handoffs.
The numbers for this room, with their source.
Crop-climate values are published from ICAR-DMR guidance with the stage they apply to. Equipment sizes stay project-specific and are never published as defaults.
ENV.CLIMATE.AIR_TEMPERATUREsource contextualRoom dry-bulb temperature
14 to 25 °CICAR-DMR button mushroom: spawn run 22 to 24 °C, case run 23 to 25 °C, fruiting 15 to 17 °C in controlled rooms; seasonal tables give 14 to 18 °C for fruiting
- Unit
- °C
- Context
- Mapped at crop and return-air locations
- Review needed from
- Button Mushroom crop-climate reviewer
ENV.CLIMATE.COMPOST_TEMPERATUREsource contextualCompost core temperature
20 to 25 °CICAR-DMR: 24 to 25 °C in the compost during spawn run, easing to about 20 °C once the room is aired for pinning
- Unit
- °C
- Context
- Representative depth and rack position
- Review needed from
- Button Mushroom crop-climate reviewer
ENV.LOAD.CROP_HEATpending technical verificationCrop and compost heat release
Technical value pending verification- Unit
- kW
- Context
- Measured or validated biological load basis
- Review needed from
- Qualified HVAC or electrical engineer
ENV.REFRIGERATION.CAPACITYpending technical verificationRefrigeration capacity
Technical value pending verification- Unit
- kW refrigeration
- Context
- Evaporating, condensing and part-load conditions retained
- Review needed from
- Qualified HVAC or electrical engineer
ENV.REFRIGERATION.COPpending technical verificationCoefficient of performance
Technical value pending verification- Unit
- dimensionless
- Context
- Cooling output and electrical input boundary matched
- Review needed from
- Qualified HVAC or electrical engineer
ENV.AHU.COIL_DUTYpending technical verificationCooling-coil duty
Technical value pending verification- Unit
- kW
- Context
- Air states, flow, fluid conditions and fouling basis retained
- Review needed from
- Qualified HVAC or electrical engineer
Transparent calculation framework
Equations expose variables, units, assumptions, validation and the point where project data must enter.
ENV.FORMULA.FRESH_AIRCalculate outdoor-air total heat load from enthalpy difference
Required variables
- ṁ · dry-air mass flow
- kg/s; derived from measured volume flow, density and pressure context
- h_out · outdoor-air enthalpy
- kJ/kg dry air; validated psychrometric state
- h_in · room-air enthalpy
- kJ/kg dry air; validated psychrometric state
Assumptions
- State points and mass-flow basis are consistent
- Heat recovery and leakage are treated separately
Validation
- Equal enthalpy states return zero
- Sign follows declared heat-flow convention
ENV.FORMULA.COPRelate refrigeration output to electrical input at one condition
Required variables
- Q_cooling · useful cooling output
- kW; same rating and boundary as input
- P_input · electrical input
- kW; compressor or system boundary stated
Assumptions
- Steady declared operating point
- Auxiliaries are included only if stated
Validation
- Input power must be positive
- Output and input units cancel
ENV.FORMULA.DEMANDStructure a coincident electrical demand schedule
Required variables
- P_running,i · equipment running input
- kW; nameplate or measured input
- coincidence_i · scenario coincidence
- ratio; documented operating sequence
Assumptions
- Starting transient is evaluated separately
- Power factor and kVA are not inferred from kW
Validation
- Coincidence factors are between zero and one
- Every included load has a declared scenario
Printable field sheets
Download a blank CSV, open it in a spreadsheet, and record the actual observations with units and references. These educational templates are not acceptance criteria or engineering certificates.
Evidence and review
Source type, applicability and limitations stay visible so older farm guidance is not mistaken for current engineering law.
foundational · buildingFarm Design for White Button Mushroom Cultivation
Indian production-room workflow, farm components, controlled-room and air-handling context.
Foundational farm guidance does not replace current structural, refrigeration, electrical or safety design.
Open primary sourcecurrent · buildingNational Building Code of India 2016
Building, fire, services, refrigeration, sanitation, electrical and facility-management context.
Local adoption, amendments, authority requirements and specialist codes must be verified for each project.
Open primary sourcecurrent · hvac2025 ASHRAE Handbook Fundamentals table of contents
Current chapter architecture for psychrometrics, refrigeration cycles, heat transfer, controls and measurement.
The public index identifies the current edition; detailed design use requires access to the handbook.
Open primary sourcecurrent · hvacISHRAE standards and position papers
Indian HVAC standards context including air-handling units and commissioning.
Standard titles are an index; design claims must cite and comply with the applicable edition and project jurisdiction.
Open primary source