Cold-Stored Brewed Beverage Dispensing With On-Demand Heating
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Solution Overview
Problem
There is a need for a method and system that combines centralized brewing of hot beverages like coffee and tea with cold storage to maintain freshness and quality, while allowing for hot or cold delivery, as existing methods result in rapid freshness loss and quality control issues due to on-site brewing.
Innovation Solution
A system where brewed beverages are stored in a cold environment, such as a keg, with a gas like nitrogen to prevent oxidation, and can be heated on demand at the point of dispensing, enabling centralized brewing and flexible serving temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brewed beverages are stored at cold temperature to maintain freshness, then product freshness is improved, but the ability to serve hot beverages is worsened
Solution Approach 1:
The system divides the beverage service process into two independent stages: brewing (done centrally and cold-stored) and heating (done on-demand at dispensing). This segmentation allows the beverage to be brewed once under controlled conditions and stored cold for freshness, then heated individually when served, thus resolving the contradiction between cold storage for freshness and hot serving capability
Solution Approach 2:
The beverage is brewed in advance under rigorously controlled conditions and cold-stored with nitrogen atmosphere to preserve freshness before dispensing. This preliminary action ensures optimal brewing quality is achieved once under controlled conditions, eliminating the need for repeated brewing while maintaining freshness through cold storage and inert gas atmosphere
2Reliability
If brewing is done at the point of dispensing to ensure freshness, then product freshness is improved, but brewing quality control is worsened
Solution Approach 1:
The brewing process is extracted from the dispensing location and centralized at a dedicated brewing facility. This allows brewing to be performed under rigorously controlled conditions with precise control over grind size, water quality, temperature, and cleaning protocols, while the brewed beverage is then transported in cold, nitrogen-flushed containers to dispensing locations, separating the quality-critical brewing function from the delivery function
Solution Approach 2:
The system uses nitrogen gas to create an inert atmosphere in storage containers, replacing oxygen to prevent oxidation and degradation of the brewed beverage during storage and transport. This allows the beverage to be brewed once under controlled conditions and stored for extended periods while maintaining freshness and quality
3Loss of substance
If brewed beverages are not served quickly after brewing to maintain freshness, then waste is reduced, but freshness loss occurs
Solution Approach 1:
Nitrogen gas is used to displace oxygen in the storage container, creating an inert atmosphere that prevents oxidation and chemical degradation of the brewed beverage. This allows the beverage to be stored for extended periods without freshness loss, eliminating the need to discard partially consumed batches and reducing waste
Solution Approach 2:
The system changes the storage temperature parameter to cold temperatures and the atmospheric composition to nitrogen-rich environment, which together dramatically slow down degradation reactions. This parameter change extends the shelf life of brewed beverages from hours to days or weeks, allowing centralized brewing and reducing waste from unsold batches
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach maintains product freshness, improves quality control, and allows for consistent hot or cold serving, reducing waste and quality control issues associated with on-site brewing.
Implementation Method 1
A gas such as nitrogen may be added to the keg to displace oxygen, thereby reducing or eliminating oxidation
Implementation Method 2
A container containing a batch quantity of a brewed beverage may be cooled for storage, for example to maintain product freshness
Implementation Method 3
If the input indicates that a hot serving is desired, a segment of the dispensing line may be warmed to increase the temperature of a serving portion
Data Source
AI summary
A delivery system and method for a brewed beverage, such as coffee or tea, that stores a batch of brewed beverage in a cooled container, and heats a serving quantity on demand at the point of dispensing. A heater such as a tankless water heater may be connected to a dispensing line to generate hot servings on demand. Cold servings may also be provided. Quality control of the brewing process may be improved by brewing in a centralized, controlled environment and then shipping cooled containers to dispensing points such as coffee shops or cafés. Containers may be filled with a gas such as nitrogen to prevent oxidation, thereby preserving freshness during storage or shipping. At the dispensing site, containers may be refrigerated and attached to gas tanks to maintain the freshness as servings are dispensed.