OT_207: FAO / Cano-Muñoz (1991), Planning of Cold Storage (MEAT cold-store manual, APHP 92)

OT_207: FAO / Cano-Muñoz (1991), Planning of Cold Storage (MEAT cold-store manual, APHP 92)

Source

https://www.fao.org/3/T0098E/T0098E00.htm — original source (opens in a new tab; the file is not redistributed)

Summary

This is the chapter “Planning of cold storage” from FAO Animal Production and Health Paper 92, Manual on meat cold store operation and management (Cano-Muñoz, G., 1991, FAO, Rome; ISBN 92-5-102788-9). It is a meat cold-store manual — its worked content is carcass hanging rails, freezing tunnels (−30 to −45 °C), meat handling by forklift/pallet, meat hygiene and disinfection, and loading-dock/transport design for a slaughterhouse cold chain. For the Neobiome project its value is narrow and specific: it is an authoritative source for the geometric conversions that size a built cold store — the relationship between the volume of produce actually stacked (net), the storable chamber volume (gross), and the whole building envelope (total).

The single model-relevant figure is the gross-to-net volume conversion: “gross volume is about 50 percent greater than net volume” (gross ≈ 1.5 × net; gross area ≈ 1.25 × net area) OT_207. The chapter also gives a separate design-efficiency index, gross ÷ total volume in the range 0.50–0.80 OT_207 — a different ratio that the upstream compiled research had conflated with the gross/net one (correction applied here). It supplies meat storage densities only (Tables 3–4: frozen boned meat ≈125–640, beef quarters ≈210–350, pork ≈230–380, mutton ≈150–240 kg/m³) and no produce density at all OT_207 — so it gives the model the geometry of store sizing, not the produce packing density (the density leg has to come from elsewhere, e.g. ASHRAE, un-retrieved). A secondary siting heuristic — total site land ≈ 6–10 × the covered building area OT_207 — is useful for a community store’s land-take.

Key claims

- claim: "GROSS-TO-NET VOLUME CONVERSION (the model-relevant sizing figure). Verbatim: 'Similarly gross volume is about 50 percent greater than net volume, and gross area (same concept as volume) is about 25 percent greater than net area.' So gross volume is approximately 1.5 x net volume, and gross floor area approximately 1.25 x net area. NET volume = the space where produce is actually stacked; GROSS volume = the storable space, which additionally includes pillars, coolers, ducts, air-circulation and traffic passages inside the chambers. This is the ONLY verbatim gross/net ratio in the chapter. [verified verbatim against the raw HTML]"
  source_location: "FAO/Cano-Muñoz (1991), 'Planning of cold storage', § General arrangements, volume-parameters paragraph (immediately after the total/gross/net definitions and the gross-over-total index sentence). HTML chapter, no printed page numbers."
- claim: "GROSS-OVER-TOTAL DESIGN-EFFICIENCY INDEX (a DIFFERENT ratio, NOT gross/net). Verbatim: 'An index of how reasonably and economically the cold store has been designed is the gross volume divided by the total volume. It must be in the range of 0.50 to 0.80.' This 0.50-0.80 is gross divided by TOTAL volume (a design-quality index of how much of the whole building envelope is storable), NOT gross divided by net. The two ratios must not be conflated (the upstream compiled research had done so). [verified verbatim against the raw HTML]"
  source_location: "FAO/Cano-Muñoz (1991), § General arrangements, volume-parameters paragraph (the sentence immediately preceding the gross approximately 1.5x net sentence)."
- claim: "VOLUME DEFINITIONS (the basis for the two ratios above). Verbatim: 'The total volume is the space comprised within the floor, roof and walls of the building. The gross volume is the total volume in which produce can be stored, that is excluding other spaces not for storage. The net volume represents the space where produce is stacked, excluding those spaces occupied by pillars, coolers, ducts, air circulation and traffic passages inside the chambers that are included in the gross volume.' Also verbatim: 'Storage density referred to as net volume is expressed in kg/useful m3, but is most commonly referred to as gross volume.' [verified verbatim against the raw HTML]"
  source_location: "FAO/Cano-Muñoz (1991), § General arrangements, volume-parameters paragraph."
- claim: "MEAT STORAGE DENSITIES ONLY; NO PRODUCE/FRUIT/VEGETABLE DENSITY ANYWHERE IN THE CHAPTER. Table 4 'Density of storage of meat products' gives gross-volume effective storage densities (kg/m3) for MEAT only: frozen boned meat approx 125-640, beef quarters (hind/forequarters) approx 210-350, pork (half-carcasses/loins) approx 230-380, mutton (whole carcasses) approx 150-240, poultry/game approx 100-350 kg/m3 (values span palletized vs non-palletized storage and poor-vs-good accessibility). Table 3 'Density of storage of hanging carcasses' gives LINEAR rail densities in kg per linear metre of rail (e.g. beef half-carcasses 430-600 kg/m, pork 250-600 kg/m) - a different unit, not kg/m3. The chapter publishes NO storage density for fruit, vegetables or any non-meat produce. [meat ranges match the retrieval-verified figures; verified against Tables 3-4 of the raw]"
  source_location: "FAO/Cano-Muñoz (1991), § Management, Table 3 'Density of storage of hanging carcasses' and Table 4 'Density of storage of meat products' (both attributed 'From: FAO Agricultural Services Bulletin 19/2, Rome, FAO, 1984')."
- claim: "SITE-FOOTPRINT HEURISTIC. Verbatim: 'A land area about six to ten times the area of the covered surface will suffice.' i.e. the total site land needed (the store plus its annexes, traffic, parking and possible future enlargement) is approximately 6-10x the covered building footprint. [verified verbatim against the raw HTML]"
  source_location: "FAO/Cano-Muñoz (1991), § General arrangements, land-area paragraph (near the start of the section)."

Neobiome Intelligence relevance

Feeds d02_smart_food_systems (whose scope explicitly lists “cold storage” and “food processing and preservation”) as the geometric store-sizing conversion for a community produce cold store. Concretely:

1. The net → gross → total sizing chain. The model turns a produce quantity into a refrigerated building volume in three steps: net_volume = produce_mass ÷ produce_packing_density; then gross_volume ≈ 1.5 × net_volume (this source) OT_207; then total_volume ≈ gross_volume ÷ 0.50–0.80 (this source’s design index; ~÷0.65 mid) OT_207. So the whole built/refrigerated envelope is roughly 1.5 ÷ 0.65 ≈ 2.3 × the net stacked volume. The gross volume is the figure the per-volume energy coefficients act on — the sibling coolstore load benchmarks (Evans international ~55.7 kWh/m³/yr chilled; the NZ apple-store 79 kWh/m³/yr anchor) are quoted per m³ of store, so FAO’s conversions are the bridge from “kg of produce to store” to “kWh/yr of refrigeration”.
2. The produce packing density is the missing leg, and FAO does NOT supply it. Because this is a meat manual, the only densities here are meat (125–640 kg/m³), which must NOT be substituted for produce: loose-stacked fruit/vegetables in bins or crates pack very differently from dense boned/carcass meat. FAO gives the geometry, not the density. The produce-density input remains the weakest, unsourced leg of the coolstore cluster (authoritative home = ASHRAE Handbook-Refrigeration, un-retrieved / likely paywalled) — recorded as an in-page gap (see Research targets).
3. Site land-take. The 6–10 × covered-area land requirement OT_207 feeds a community store’s footprint in a land-constrained site plan (the same “land is a binding constraint” framing D02 already carries for food area).
4. Applicability caveat (why data_quality is medium). The net/gross/total conversions are generic to any palletised cold store and transfer cleanly to a produce store; but the freezing temperatures (−30 to −45 °C), hanging-rail carcass layouts, meat hygiene/disinfection regimes, and the meat densities do not map onto a chilled produce store (0–5 °C). Use only the volume conversions and the site-footprint ratio; treat everything else as meat-specific context.

Thesis relevance (context: both): grounds the post-harvest / cold-chain strand of the food-self-sufficiency argument — an authoritative FAO statement of how cold-store capacity, storable volume and refrigerated envelope relate, and of the operational demands (siting, single-storey construction, air change, hygiene) a community would inherit if it built one.

Underlying / related sources

• FAO Agricultural Services Bulletin 19/2 (FAO, Rome, 1984) — the stated source of the storage-density figures in Tables 3 and 4 (hanging-carcass and meat-product densities). Not separately retrieved; the density tables are already held via this chapter.
• IIR (1976), Guide to a refrigerated store (International Institute of Refrigeration) — cited as the planning-stage checklist. Contextual; not retrieved.
• International Institute of Refrigeration (1967), Recommended conditions for cold storage of perishable produce (Paris) — source of Figure 7 (condensation-on-unloading graph). Contextual; not retrieved. (Notably, THIS is the IIR title that would carry produce conditions — a candidate lead for the produce-density gap, but un-retrieved.)

Notes

• It is a MEAT cold-store manual. FAO Animal Production and Health Paper 92, Manual on meat cold store operation and management (Cano-Muñoz, G., 1991; ISBN 92-5-102788-9; FAO document code T0098E, read from the HTML’s stylesheet reference T0098E.CSS). The ingested chapter is “Planning of cold storage”. State this clearly wherever the source is cited so its densities/layouts are not mistaken for produce guidance.
• Correction applied (ratio conflation). The compiled research conflated two ratios. Recorded here correctly: gross ≈ 1.5 × net (verbatim, the usable model figure); the 0.50–0.80 is gross ÷ TOTAL volume (a design-efficiency index), NOT gross ÷ net.
• Mis-attribution guard. This chapter contains no “10–14 kW per 1,000 m³” refrigeration-power figure — that belongs to USDA Handbook 66 (OT_209). Do not attribute it to FAO.
• Verified against the raw. Every figure above was extracted from the HTML (textutil conversion) and confirmed verbatim against the raw. sha256 (e8afc1a8…) is of the single HTML file at source_path.
• Web/HTML capture, but authoritative. The raw is an HTML capture of the FAO document-repository chapter (text only; the linked CSS and figure images were not captured). It is the genuine first-party FAO publication, not an AI synthesis. The captured HTML does not embed its own source URL; the FAO doc code T0098E is read from the stylesheet, and the canonical document root is https://www.fao.org/3/T0098E/T0098E00.htm — the exact chapter subpage number was not recorded in the raw, so it is not cited beyond the doc code.
• Data quality medium. Extraction is certain (verbatim), but the source is a meat manual repurposed for produce-store sizing: only the geometric conversions and the site-footprint ratio transfer, and the produce packing density — the actual model input — is not in this source.

Research targets

Documents to retrieve

• Produce packing density (kg/m³) for chilled fruit/vegetables — the leg FAO does NOT supply (meat densities only). Authoritative home is ASHRAE Handbook-Refrigeration (un-retrieved, likely paywalled); IIR (1967) Recommended conditions for cold storage of perishable produce is a secondary lead. Recorded here as an in-page gap: the produce-density gap belongs with the coolstore compiled-research cluster, which carries it once, so it is not duplicated per-source here.

Research gaps

• None opened. No existing research target is resolved by this source.

Connections

Links to

Sources (1): OT_209

Referenced by

EDT domains (1): D02: Smart Food Systems & Agriculture