By Eamonn Ryan
Increasingly, the cold store is becoming one of the most sophisticated assets within the cold chain, where insulation, refrigeration, automation and digital intelligence work together to protect product quality while reducing energy consumption and operating costs.
The modern cold store is no longer simply a refrigerated building. At the heart of every successful facility lies an insulated envelope. High-performance panels, carefully engineered joints and correctly specified doors and floors determine how effectively refrigeration systems perform throughout the life of the installation.
Yet today’s cold stores are expected to do far more than maintain temperature. Real-time monitoring, integrated controls and intelligent workflows are transforming cold rooms into connected environments that improve traceability, productivity and sustainability.
WHY INTELLIGENT COLD ROOMS ARE SHAPING AFRICA’S COLD CHAIN
At a recent cold chain presentation, Wayne Freel, sales manager at Apex Real Time Solutions, describes how automation and intelligent software can transform packhouses and cold-chain operations.
Drawing on projects across Africa and worldwide – from roses in Kenya to pharmaceuticals and mobile phones – he shows that good insulation, reliable refrigeration and sound construction were the primary measures of success.
“Across Africa, we’re seeing cold rooms evolve from being little more than refrigerated boxes into intelligent, connected assets that actively support productivity, food safety, energy efficiency and overall business resilience.”
That change is being driven by growing demand for temperature-controlled storage across sectors such as food production, agriculture, pharmaceuticals, retail and logistics. As businesses contend with rising energy costs, stricter quality standards and increasing pressure to reduce waste, the conversation is no longer simply about how cold a facility can be. It’s about how efficiently and intelligently it operates.
The starting point will always be the insulated envelope. High-performance insulated panels remain fundamental because they reduce heat ingress, lower refrigeration loads and provide the thermal stability the cold chain depends on.
Today’s panel technologies also deliver improved insulation performance, better fire resistance, enhanced hygiene and longer service life, helping operators reduce operating costs while maintaining consistent product temperatures.”
However, even the best insulated structure cannot compensate for poor operational practices. Every unnecessary door opening, prolonged loading operation or avoidable product movement introduces warm air into the cold room, forcing refrigeration systems to work harder to restore temperature conditions. The result is higher energy consumption, greater equipment wear and an increased risk of compromising product quality.
WHERE INSULATION ENDS, INTELLIGENCE BEGINS
This is where intelligent cold room design is becoming increasingly important. Rather than viewing refrigeration, insulation and warehouse operations as separate disciplines, many facilities are now taking a more integrated approach. Building layout, traffic flow, loading procedures, access control and temperature monitoring are all designed together to minimise thermal losses while improving operational efficiency.
Digital technologies are accelerating this transformation. Modern cold rooms increasingly incorporate networks of sensors that continuously monitor temperature, humidity, door activity and equipment performance.
Instead of relying on periodic manual checks, operators receive real-time visibility into storage conditions and can respond immediately if temperatures begin to drift outside acceptable limits.
This continuous monitoring not only protects valuable products but also provides detailed records that support food safety, pharmaceutical compliance and customer assurance. For exporters and retailers, the ability to demonstrate uninterrupted cold chain integrity is becoming an increasingly important competitive advantage.
Traceability is another area where intelligent cold rooms are adding value.
The opening of Maersk Belcon cold store last year, featured as a project in Cold Link Africa. Part of the Apex Real Time Solutions presentation.
Fred Albrecht, CEO of Logistics Systems Engineering (LSE).
By integrating environmental monitoring with barcode, RFID or warehouse management systems, operators can track products throughout the storage process while linking each batch to its environmental history. If a quality issue arises, businesses can identify precisely where and when a problem occurred, reducing waste, limiting recalls and improving customer confidence.
Automation is also beginning to reshape cold storage operations. Automated storage and retrieval systems, conveyor systems and smart product routing reduce unnecessary handling and shorten the time products spend outside controlled environments. By limiting door openings and reducing forklift traffic inside cold stores, these systems help maintain more stable temperatures while lowering refrigeration energy demand.
THINKING BEYOND THE COLD ROOM
Yet technology alone is not the answer. The greatest benefits come from viewing the cold room as part of a complete cold chain ecosystem. Refrigeration systems, insulated panels, loading docks, monitoring platforms, warehouse software and product handling processes must all work together if facilities are to achieve maximum efficiency.
This holistic approach also supports sustainability objectives. Better insulation reduces heat gain. Smarter monitoring detects inefficiencies before they become costly failures. Improved workflows minimise temperature fluctuations and unnecessary refrigeration loads. Together, these measures reduce electricity consumption, extend equipment life and lower the carbon footprint of cold storage facilities without compromising product quality.
For Africa, where expanding agricultural exports, pharmaceutical distribution and food security all depend on reliable temperature-controlled infrastructure, this evolution presents significant opportunities.
Modular construction techniques, locally manufactured insulated panels and increasingly sophisticated monitoring technologies are making high-performance cold storage more accessible across a wider range of applications.
The cold room of the future is therefore no longer simply a refrigerated box. It is an intelligent, connected environment that combines advanced insulation, digital monitoring, efficient workflows and integrated system design to protect products while reducing costs. As Africa’s cold chain continues to expand, facilities that embrace this broader vision will be better positioned to deliver the efficiency, resilience and sustainability that modern markets increasingly demand.
As insulated panel technology has advanced, attention has increasingly shifted from simply building better cold rooms to operating them more intelligently. The next article explores how digital monitoring, automation and integrated design are transforming cold stores into connected assets that actively improve efficiency, traceability and product protection.
Smart cold stores:
Why empty air is your most expensive asset
At the same cold chain event, logistics systems engineer Fred Albrecht, CEO of Logistics Systems Engineering (LSE), delivered a message that cuts to the heart of cold storage design: the most expensive thing in a cold store is empty air.
In an industry that watches pallet positions, kilowatts and square metres closely, it is easy to overlook that operators are paying every hour to refrigerate volume they do not use well.
Part of the LSE presentation.
Albrecht’s core argument is that warehouses – and by extension cold stores – do not have a storage problem; they have a flow problem. “Faced with growth or operational pressure, the instinctive reaction is still to plan a bigger warehouse: more land, more panel surface, more refrigeration capacity. In the cold chain this can become an expensive reflex. If density and flow are poor, the result is a large, refrigerated envelope filled with underutilised space. The cold store becomes a box of cold air rather than a tightly engineered volume of cold product.”
The design philosophy he described is a shift from bigger to smarter. Facilities should be designed for humans, machines and margins together, rather than chasing margin at the expense of everything else. That means treating the cold store as an operational asset, not just a static storage box. “In practice, this means layouts and systems that balance high storage density with high throughput. Instead of trading one off against the other, the objective is to engineer both, so that the cubic metres defined by panels and doors are used as intensively and efficiently as possible,” he says.
LSE frames its approach around four operational constraints that sit above specific equipment choices: space, throughput, people and quality (with data tightly linked to quality). Space, in this context, is refrigerated cubic volume, not just floor area. Mobile racking and pallet shuttle systems, for example, allow operators to significantly increase storage density within a given box while maintaining accessibility and control. For cold room builders and panel suppliers, this reinforces the point that the value of the insulated envelope is amplified when internal systems exploit its full height and volume, instead of simply spreading out across a footprint.
“Throughput is just as critical. In cold chain operations, dwell time punishes far more severely than in ambient warehouses. Every open dock door, slow loading cycle and congested aisle adds heat ingress and energy cost. In a freezer, seconds and minutes matter; long waits at doors are simply unaffordable. Automation and better flow design shorten internal travel paths, cut door-open times and support predictable loading against tight export or retail windows. A well-insulated panel box with poor flow will never deliver its theoretical energy performance in practice.”
The third constraint is people. Across the sector, staff are increasingly reluctant to work in freezers and other harsh environments. Albrecht’s view of automation is that it is not about removing people entirely, but about removing the most punishing, repetitive and unsafe tasks. That makes cold stores more workable and attractive, while the remaining workforce can operate at a higher, more predictable level of productivity.
Quality and data form a fourth pillar. Fewer product touches, clear traceability – whether first-in-first-out or first-expiry-first-out – and real-time monitoring and reporting are becoming standard expectations in serious cold chain operations. Integrated warehouse management and control systems turn the insulated box into a data-rich environment.
Instead of reacting to problems after quality is lost, operators can see what is happening inside the cold store and intervene proactively.
Based on their case experience, LSE has seen energy efficiency improvements in the region of 30–35% where storage density is optimised, flow and dwell times are engineered rather than left to chance, and automation and control systems support stable, predictable workflows.
Crucially, many of these gains are realised within existing buildings and footprints. For African operators with legacy cold rooms and panel envelopes that are structurally sound but operationally outdated, this is a powerful message.
While intelligent technologies are reshaping the future of cold storage, they still depend on one fundamental requirement: a well-designed insulated envelope.
Our final article profiles South African specialist Precool, a company whose decades-long commitment to engineering excellence demonstrates why getting the fundamentals right remains the foundation of every successful cold store.
“DOING IT PROPERLY”: HOW TERENCE ZWICK BUILT PRECOOL INTO A QUIET POWERHOUSE
Precool is a Pretoria-based specialist in insulated panel systems and cold-room envelopes for the refrigeration and cold chain industry. Since 1969 it has manufactured and installed panels, doors and insulated floors for retailers, food processors, logistics operators and export packhouses across southern Africa, and also distributes advanced fresh-produce packaging and greenhouse dehumidification solutions.
Precool stands out through long-term refrigeration know-how, strict adherence to panel specifications, highly flexible ‘jobbing’ production for fast, custom work and a holistic cold-chain offering that spans panels, packaging and humidity control rather than treating panels as a commodity.
Zwick observes that well-designed insulated envelopes can reduce energy use by a quarter or more compared to conventional shells.
FROM A BETTER JOINT TO A BETTER BUSINESS
Precool’s distinctive timber-free panels and joint systems trace their origins to an imported American cold room founder Terence Zwick examined early in his career. The unit relied on a timber frame and glued insulation, a combination he found illogical. If the panels were bonded, why retain the frame?
Examining an imported cold room early in his career, Zwick questioned why a bonded insulated panel still required a timber frame. That curiosity ultimately led to the development of Precool’s distinctive timber-free panel and joint systems, which have since been refined to improve thermal performance, vapour sealing and ease of installation.
Precool CEO Ari Zwick says this shift aligned Precool with global trends in building performance. In many European jurisdictions, new industrial buildings cannot be erected without adequate insulation. Zwick observes that well-designed insulated envelopes can reduce energy use by a quarter or more compared to conventional shells. For a country grappling with electricity supply constraints, the move from pure refrigeration work to broader thermal efficiency design has given Precool added relevance and resilience.
BUILT FOR THE REAL WORLD
The heart of the business remains the design, manufacture and installation of insulated panels, doors and floors specifically for refrigeration duty. Alongside its premium commercial and industrial work, the company has developed an economy range aimed at smaller and informal operations such as tuckshops and spaza shops. These thinner-gauge, cost-optimised panels are made on the same equipment and sold largely on a cash-and-collect basis directly from the premises.
Precool’s customer base spans retail, food processing, logistics and agriculture. Over the years, it has completed extensive work for major supermarket chains including Shoprite, Checkers, Freshmark and Pick n Pay, delivering back-of-store cold rooms, distribution infrastructure and extensions across the country. In the industrial and export space, it points to reference projects such as a large fresh-produce market and cold-storage complex in Nelspruit incorporating approximately 22 000m2 of panel work; and a major processing and packing site for salads, berries and other produce supplied to Woolworths.
A central element of Precool’s market positioning is its emphasis on quality and specification integrity, particularly with respect to foam density and panel performance. Combined with its flexible production model and nationwide installation capability, this quality stance helps differentiate Precool from panel suppliers that compete primarily on first cost.
BEYOND PANELS: EXTENDING THE COLD CHAIN
Over the past two decades, the company has also extended its activities into adjacent areas that are tightly integrated with refrigeration and the cold chain.
It is the South African distributor for a range of Internationally-manufactured modified-atmosphere packaging for fresh produce, including banana crate liners and retail bags, lychee pouches and bags for sugar snap peas, snow peas, pomegranates, cherries and other stone fruit. These packaging systems manage respiration, humidity and gas exchange to extend shelf life, reduce shrinkage and make it possible to switch certain export lines from airfreight to refrigerated sea freight.
Looking ahead, Precool continues to invest in its manufacturing capability and technology, including polyurethane foaming equipment that deepens in-house control over core quality and consistency.
Its strategy emphasises maintaining flexible production lines that can serve both high-volume industrial projects and smaller bespoke installations, building strong partnerships with refrigeration contractors and consulting engineers, and expanding its role in packaging and environmental control where refrigeration, humidity management and shelf-life extension converge. Underlying this is a commercial philosophy that success in the refrigeration and cold-chain industry depends less on the lowest initial price and more on installations that perform reliably for decades.