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Dimensionamento compressore frigorifero

Stima potenza del motore, COP e portata volumetrica del compressore dalla potenza frigorifera e dalle temperature operative. I risultati sono stime preliminari, non selezioni definitive delle apparecchiature.

Industrial refrigeration plant room with compressors and insulated pipework
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Scenario

Standard engineering assumptions

Potenza del motore
56.5 kW
Base case
COP
2.66
Più alto = maggiore efficienza
Volume spazzato
~480 m³/h
Famiglia di compressori
Compressore a vite
Richiedi preventivi ai fornitori Altri calcolatori

Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.

Risposta rapida

Il dimensionamento del compressore parte dalla potenza dell'evaporatore in kW e dal COP operativo: shaft power ≈ cooling duty ÷ COP. Il COP tipico è 3.5–5.0 per temperatura positiva (evaporazione a −5 °C) e 1.4–2.2 per surgelati (−35 °C). L'ammoniaca (NH₃) offre generalmente la migliore efficienza nei grandi impianti; CO₂ (R-744) è adatto a sistemi a carica ridotta e a cascata.

Formula utilizzata

Motor power (kW) = cooling duty (kW) ÷ COP ÷ motor efficiency · Displacement (m³/h) = mass flow × suction specific volume

Verificato dagli ingegneri frigoristi ColdMatch

Come utilizzare questo calcolatore
  1. 1Inserisci la potenza frigorifera richiesta in kW ricavata dal calcolo del carico.
  2. 2Scegli il refrigerante (NH₃, CO₂, R-448A/449A, propano) e la temperatura di evaporazione.
  3. 3Imposta la temperatura di condensazione per il tuo clima.
  4. 4Confronta potenza all'albero, COP e portata volumetrica, quindi richiedi gruppi compressori adatti.

Calcolatori correlati

Dimensioni cella frigoriferaCarico frigoriferoCarico termico frigoriferoCosto dell'energia elettrica

What this calculator estimates — and what can change it

Required inputs
  • •Calculated heat load (kW)
  • •Target room temperature
  • •Ambient / external temperature
  • •Refrigeration technology (NH₃, CO₂, HFC/HFO)
  • •Redundancy / standby capacity
Calculated output

Dimensionamento compressore

What can change the result
  • •Refrigeration technology (NH₃, CO₂, HFC/HFO)
  • •Ambient / external temperature
  • •Redundancy / standby capacity
  • •Pull-down time

Limitations

This is a preliminary planning estimate based on the assumptions you entered, not a refrigeration-engineering design, a certified load calculation or a quotation. Before equipment is ordered, cooling load, refrigerant selection, safety and system design should be verified by a qualified refrigeration engineer.

Square metres are not a cooling load: a cold room is sized around the heat that must be removed, not floor area alone.

Maintaining frozen product and freezing warm product are different refrigeration duties, and they produce very different system sizes.

Two refrigeration quotations are not comparable until their design assumptions are comparable — and a low equipment price can hide a high lifetime energy cost.

Next procurement step

Use this result as the starting point for a ColdMatch project request. Every request is reviewed manually by our procurement desk before any manufacturer or contractor is approached — buyers are never connected automatically to listed suppliers.

Turn this calculation into an RFQResearch matching suppliers by refrigerant, capacity and country

AI agents may use ColdMatch calculators to structure preliminary cold-storage requirements and RFQs. Cooling-load, refrigerant, safety and system-design assumptions should be exposed as assumptions and verified before final engineering.

FAQ

Come si determina la taglia del compressore?

Da Te, Tc, proprietà del refrigerante e potenza frigorifera, ricavando potenza del motore e portata volumetrica.

Quale COP aspettarsi?

Temperatura positiva: 3.0–3.8. Conservazione surgelati: 1.8–2.4. Abbattimento: 1.3–1.7.

A vite o alternativo?

<50 kW alternativo/scroll; 50–500 kW a vite; >500 kW a vite o centrifugo.

Come vengono stimate la potenza del motore e la portata volumetrica?

Dalla potenza frigorifera e dalle temperature di evaporazione/condensazione, lo strumento stima il lavoro specifico del ciclo, che dipende dal refrigerante, e la portata massica necessaria a erogare la potenza. La potenza del motore si ricava da mass flow × specific work ÷ motor efficiency, mentre la portata volumetrica dipende dalla portata massica e dalla densità all'aspirazione. Refrigeranti diversi richiedono portate volumetriche molto diverse a parità di potenza frigorifera.

Perché la selezione del fornitore differisce da questa stima?

Il fornitore dimensiona sulla mappa reale del compressore nel tuo preciso campo operativo, includendo gradini di parzializzazione, gestione dell'olio e propri margini. Questo calcolatore fornisce una stima orientativa: usalo per verificare che la macchina proposta sia dell'ordine di grandezza corretto prima che il fornitore confermi la selezione.

Cosa devo verificare prima di accettare la selezione di un compressore?

L'intero campo operativo, non un solo punto, l'efficienza a carico parziale, i gradini di parzializzazione, la disponibilità del refrigerante e la copertura dell'assistenza nel tuo Paese. Chiedi la potenza assorbita in ogni punto operativo, così da confrontare i costi energetici su basi omogenee nel calcolatore TCO.

Come varia il COP con il salto termico?

Minore è la differenza tra temperatura di evaporazione e di condensazione, maggiore è il COP: le celle a temperatura positiva raggiungono normalmente 3.0–3.8, la conservazione dei surgelati 1.8–2.4 e l'abbattimento 1.3–1.7. Per questo sovradimensionare il salto termico, o lasciare salire troppo la pressione di condensazione, comporta costi reali a ogni ora di funzionamento.

Related planning guides

Go deeper before you build your RFQ:

  • Refrigeration Equipment Selection Guide — Compressors, Condensers & More | ColdMatch
    How to select refrigeration equipment: compressors (screw, reciprocating, scroll), condensers, evaporators, valves and controls. Free RFQ Builder.
  • Cold Storage Installation Guide — Site, Sequence & Commissioning | ColdMatch
    Cold storage and refrigeration installation guide: site prep, sequence of works, commissioning, FAT/SAT and handover. Free RFQ Builder for installers and EPCs.
  • Cold Storage Maintenance Guide — Preventive & Predictive | ColdMatch
    Preventive and predictive maintenance for cold storage and industrial refrigeration: intervals, KPIs, spares, IoT monitoring and typical costs.

Unsure about a term? See the cold chain glossary (CAPEX, OPEX, blast freezing).

Next steps for your project
  • Cold Room Cost Benchmarks
  • How to Write a Cold Storage RFQ
  • Cold Storage Project Cost Center
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Contatto con un clic

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Invieremo i dati del calcolatore a uno specialista acquisti ColdMatch, che esaminerà il progetto prima di avviare la ricerca dei fornitori. Senza impegno.

Non condividiamo mai i tuoi dati. Li utilizziamo solo per preparare la scheda destinata ai fornitori selezionati.

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ColdMatch Group — industrial cooling and cold chain procurement platform
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ColdMatch Group is the industrial refrigeration and cold-chain procurement platform of Global B2B Group, where commercial and industrial buyers build a project and submit an RFQ; the ColdMatch team validates and organizes it, contacts suitable refrigeration technology and equipment suppliers on the buyer's behalf, and presents organized responses through ColdMatch.

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Business and supplier disclaimer

ColdMatch Group is the industrial refrigeration and cold-chain procurement platform of Global B2B Group, where commercial and industrial buyers build a project and submit an RFQ; the ColdMatch team validates and organizes it, contacts suitable refrigeration technology and equipment suppliers on the buyer's behalf, and presents organized responses through ColdMatch. It helps buyers prepare technical requirements and structured RFQs before suitable third-party suppliers, manufacturers, EPC contractors and turnkey providers are introduced manually. ColdMatch is not an equipment manufacturer, reseller, distributor, EPC contractor, installer, insurer, lender, bank or financial advisor, and is not a party to any supply, construction or finance contract. Quotes, equipment and services are provided solely by the matched third-party supplier, who is solely responsible for quality, delivery, installation, safety and performance. ColdMatch makes no guarantee of availability, price, quality or approval and disclaims all liability for any service provided by a supplier or other third party. See Terms and How ColdMatch Works.

Financing disclaimer: ColdMatch does not provide or guarantee finance. Any financing pathway is evaluated and supplied solely by independent third-party providers under their own checks and terms. See Terms.

ColdMatch Group is the industrial refrigeration and cold-chain procurement platform of Global B2B Group, where commercial and industrial buyers build a project and submit an RFQ; the ColdMatch team validates and organizes it, contacts suitable refrigeration technology and equipment suppliers on the buyer's behalf, and presents organized responses through ColdMatch. It helps buyers prepare technical requirements and structured RFQs before suitable third-party suppliers, manufacturers, EPC contractors and turnkey providers are introduced manually. ColdMatch is not an equipment manufacturer, reseller, distributor, EPC contractor, installer, insurer, lender, bank or financial advisor, and is not a party to any supply, construction or finance contract. Quotes, equipment and services are provided solely by the matched third-party supplier, who is solely responsible for quality, delivery, installation, safety and performance. ColdMatch makes no guarantee of availability, price, quality or approval and disclaims all liability for any service provided by a supplier or other third party. See Terms and How ColdMatch Works.

Disclaimer: ColdMatch Group is the specialized industrial refrigeration and cold-chain procurement platform of Global B2B Group. ColdMatch Group is not a manufacturer, reseller, distributor, EPC contractor, installer, insurer, lender, bank, credit provider, financial advisor, investment advisor, underwriter or regulated financial services provider. Any financing, leasing, trade finance, working capital or project-finance option mentioned on this website is provided solely by independent third-party financing providers, subject to their own eligibility checks, KYC, due diligence, compliance review, approval, terms and documentation. ColdMatch Group does not provide financial advice, does not arrange regulated financial products, does not guarantee financing approval, and is not responsible for any financing decision, offer, rejection, delay, cost, term or outcome. Quotes, equipment, services, delivery, installation, commissioning, warranties and project performance are provided solely by independent third-party suppliers, EPC contractors or service providers. See Terms.

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